Poland

Poland is a country bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus to the east; and the Baltic Sea and Kaliningrad Oblast and Lithuania to the north. The total area of Poland is 312,679 square kilometres (120,726 sq mi), making it the 69th largest country in the world and the 9th largest in Europe. With a population of over 38.5 million people. Poland is the 34th most populous country in the world^, the sixth most populous member of the European Union, and the most populous post-communist member of the European Union. Poland is a unitary state divided into 16 administrative subdivisions.

Barbados

Barbados is a sovereign island country in the Lesser Antilles. It is 34 kilometres (21 mi) in length and up to 23 kilometres (14 mi) in width, covering an area of 432 square kilometres (167 sq mi). It is situated in the western area of the North Atlantic and 100 kilometres (62 mi) east of the Windward Islands and the Caribbean Sea; therein, it is about 168 kilometres (104 mi) east of the islands of Saint Vincent and the Grenadines and 400 kilometres (250 mi) north-east of Trinidad and Tobago. Barbados is outside of the principal Atlantic hurricane belt.
Barbados was discovered by Spanish navigators in the late 15th century and claimed for the Spanish Crown. It first appears on a Spanish map from 1511. The Portuguese visited the island in 1536, but they left it unclaimed, with their only remnants being an introduction of wild hogs for a good supply of meat whenever the island was visited. The first English ship, the Olive Blossom, arrived in Barbados in 1624. They took possession of it in the name of King James I. In 1627 the first permanent settlers arrived from England, and it became an English and later British colony.
In 1966, Barbados became an independent state and Commonwealth realm, retaining Queen Elizabeth II as Head of State.^[ It has a population of 277,821 people, mostly of African descent.  Despite being classified as an Atlantic island, Barbados is considered to be a part of the Caribbean, where it's ranked as a leading tourist destination and one of the region's most developed islands, with a high HDI number of 0.825. In 2011 Barbados ranked second in the Americas (after Canada) and 16th globally on Transparency International's Corruption Perception Index.

Hungary

Hungary is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The country's capital and largest city is Budapest. Hungary is a member of the European Union, NATO, the OECD, the Visegrád Group, and the Schengen Area. The official language is Hungarian, which is the most widely spoken non-Indo-European language in Europe.
Following centuries of successive habitation by Celts, Romans, Huns, Slavs, Gepids, and Avars, the foundation of Hungary was laid in the late 9th century by the Hungarian grand prince Árpád in the Honfoglalás ("homeland-conquest"). His great-grandson Stephen I ascended to the throne in 1000 AD, converting the country to a Christian kingdom. By the 12th century, Hungary became a middle power within the Western world. Following the Battle of Mohács in 1526, Medieval Hungary collapsed and succumbed to 150 years of partial Ottoman occupation (1541–1699). Hungary eventually came under Habsburg rule, and later formed a significant part of the Austro–Hungarian Empire (1867–1918).
Hungary's current borders were first established by the Treaty of Trianon (1920) after World War I, when the country lost 71% of its territory, 58% of its population, and 32% of ethnic Hungarians. Following the interwar period, Hungary joined the Axis Powers in World War II, suffering significant damage and casualties. Hungary came under the influence of the Soviet Union, which contributed to the establishment of a four-decade long communist dictatorship (1947–1989). The country gained widespread international attention regarding the Revolution of 1956 and the seminal opening of its previously-restricted border with Austria in 1989, which accelerated the collapse of the Eastern Bloc.
On 23 October 1989, Hungary again became a democratic parliamentary republic, and is recognized today as a developed country. Hungary is a popular tourist destination attracting 10.2 million tourists a year (2011). It is home to the largest thermal water cave system and the second largest thermal lake in the world (Lake Hévíz), the largest lake in Central Europe (Lake Balaton), and the largest natural grasslands in Europe (the Hortobágy).

Qatar

Qatar is a sovereign Arab emirate, located in Western Asia, occupying the small Qatar Peninsula on the northeasterly coast of the much larger Arabian Peninsula. Its sole land border is with Saudi Arabia to the south, with the rest of its territory surrounded by the Persian Gulf. A strait in the Persian Gulf separates Qatar from the nearby island kingdom of Bahrain.
Qatar is an absolute monarchy that has been ruled by the Al Thani family since the mid-19th century. Before the discovery of oil, Qatar was noted mainly for sea trade and pearl hunting. It was a British protectorate until it gained independence in 1971. In 1995, Sheikh Hamad bin Khalifa Al Thani became Emir when he deposed his father, Khalifa bin Hamad Al Thani, in a peaceful coup d'état, only to later step down in favor of his son, Tamim bin Hamad Al Thani, on June 2013. Qatar's semi-elected Majlis al Shura has very limited legislative authority to draft and approve laws; the Emir has final say on all matters. Most Qataris belong to the strict Wahhabi sect of Islam. Qatar has the most conservative society in the Persian Gulf after Saudi Arabia.
Qatar has the world's third largest natural gas reserves and oil reserves in excess of 25 billion barrels, which have fueled Qatar to become world's richest country per capita and achieve the highest human development in the Arab World and 36th highest globally; furthermore, it is recognized as a high income economy by the World Bank and also the 19th most peaceful country in the world. Qatar is currently undergoing transformation under the National Vision 2030, in which it expects to achieve an advanced, sustainable, and diversified economy.  In order to promote tourism, Qatar has invested billions into improving infrastructure. It held the 2006 Asian Games and will be the host of the 2022 FIFA World Cup, becoming the first Arab country to host either of the events. Qatar has become an influential player in Arab world. Qatar supported several rebel groups during the Arab Spring both financially and by asserting global influence through its expanding news group, Al Jazeera. Qatar maintains close relationships with western powers—Al Udeid Air Base plays host to US and UK air forces—and eastern powers, and has often tried to bridge the gap between Muslim and non-Muslim states. Qatar has a population of around 1.8 million people, however only 280,000 of these are citizens; the majority of the population are foreigners who work and live in the state. It is also one of the few countries in which citizens do not have to pay any taxes. Qatar is a member of Organisation of Islamic Cooperation, Gulf Cooperation Council, OPEC and the Council of Arab Economic Unity.

Slovakia

Slovakia is a landlocked state in Central Europe. It has a population of over five million and an area of about 49,000 square kilometres (19,000 sq mi). Slovakia is bordered by the Czech Republic and Austria to the west, Poland to the north, Ukraine to the east and Hungary to the south. The largest city is the capital, Bratislava, and the second largest is Košice. Slovakia is a member state of the European Union, NATO, United Nations, OECD and WTO among others. The official language is Slovak, a member of the Slavic language family.
The Slavs - ancestors of the Slovaks - arrived in the territory of present-day Slovakia in the 5th and 6th centuries during the migration period. In the 7th century, Slavs inhabiting this territory played a significant role in the creation of Samo's Empire, historically the first Slavic state which had its center in Western Slovakia. During the 9th century, Slavic ancestors of the Slovaks established another political entity, the Principality of Nitra, which later together with the Principality of Moravia, formed Great Moravia. After the 10th century the territory of today's Slovakia was gradually integrated into the Kingdom of Hungary, which itself became part of the Austro-Hungarian Empire or Habsburg Empire. After WWI and the dissolution of the Austro-Hungarian Empire, the nation of Slovaks and Czechs established their mutual state - Czechoslovakia. A separate Slovak state existed during World War II and was a client state of Nazi Germany (from 1939 to 1944). In 1945 Czechoslovakia was reestablished. The present-day Slovakia became an independent state on 1 January 1993 after the peaceful dissolution of Czechoslovakia.
Slovakia is a high-income advanced economy with one of the fastest growth rates in the European Union and the OECD. The country joined the European Union in 2004 and the Eurozone on 1 January 2009. Slovakia, together with Estonia, Latvia, and Slovenia are the only former Communist states to be part of the European Union, Eurozone, Schengen Area, and NATO simultaneously.

Estonia

Estonia is a sovereign state in the Baltic region of Northern Europe. It is bordered to the north by the Gulf of Finland, to the west by the Baltic Sea, to the south by Latvia (343 km), and to the east by Lake Peipus and Russia (338.6 km). Across the Baltic Sea lies Sweden in the west and Finland in the north. The territory of Estonia covers 45,227 km² (17,462 sq mi), and is influenced by a humid continental climate. The Estonians are a Finnic people, and the official language, Estonian, is a Finno-Ugric language closely related to Finnish, and distantly to Hungarian and to the Sami languages.
Estonia is a democratic parliamentary republic divided into fifteen counties, with its capital and largest city being Tallinn. Estonia's population of 1.3 million makes it one of the least-populous member states of the European Union, Eurozone and the North Atlantic Treaty Organization. A developed country with an advanced, high-income economy, Estonia is a member of the Organisation for Economic Co-operation and Development.
Estonia ranks high in the Human Development Index, and performs favourably in measurements of press freedom (third in the world in 2012), economic freedom, civil liberties and education. Estonia is often described as one of the most wired countries in Europe, and is recognised as a leader in e-government.