Australia: southern country, located in Oceania, which includes the lower mainland of the world.

Canada: a country that occupies most of North America and stretches from the Atlantic Ocean, east to the Pacific Ocean to the west. To the north the country is bounded by the Arctic Ocean. It is the second largest country in total area, after Russia, and its common border with the United States, in the south and northwest, is the longest land border in the world.

China is the largest country in East Asia and the world's most populous, with over 1.3 billion people, about one-seventh of Earth's population. It is a socialist republic ruled by the Communist Party of China under one-party system and has jurisdiction over 22 provinces, five autonomous regions (Xinjiang, Inner Mongolia, Tibet, Ningxia and Guangxi), four municipalities (Beijing, Tianjin, Shanghai and Chongqing) and two Special Administrative Regions with great autonomy [5] (Hong Kong and Macau).

Spain: a country in southwestern Europe on the Iberian Peninsula. Its territory is bordered to the south and east by the Mediterranean Sea, except for a small border with the British overseas territory of Gibraltar, on the north by France, Andorra and the Bay of Biscay and to the northwest and west by the Atlantic Ocean and Portugal. Spanish territory also includes the Balearic Islands in the Mediterranean, the Canary Islands in the Atlantic Ocean off the African coast and two autonomous cities in North Africa, Ceuta and Melilla, bordering Morocco. With an area of 504,030 km ², Spain is the second largest country in Western Europe and the European Union after France.

USA: is a federal constitutional republic comprising fifty states and one federal district. Most of the country is situated in central North America, consisting of 48 states and Washington, DC, the federal district of the capital. Located between the Pacific and Atlantic Oceans, bordered by Canada to the north and south Mexico. The state of Alaska is in the northwest of the continent, bordered by Canada on the east and Russia to the west across the Bering Strait. The state of Hawaii is an archipelago in the Pacific. The country also has several other territories in the Caribbean and the Pacific.

England: is one of the constituent nations of the UK. Historically dominant, occupies the southern half of the island of Great Britain, apart from one area to the west, corresponding to Wales. It limits the north with Scotland, east to the North Sea, south with the Channel and west by the Atlantic Ocean, Wales and the Irish Sea. Its capital is London. It has an area of 130,439 km ² and a population of 49 million inhabitants.

Italy is a country located on the Italian Peninsula in Southern Europe, and on two islands in the Mediterranean Sea, Sicily and Sardinia. Italy shares its northern Alpine border with France, Switzerland, Austria and Slovenia. The independent states of San Marino and Vatican City are enclaves within the Italian Peninsula and Campione d'Italia is an Italian exclave in Switzerland.

Japan is an island country in East Asia. Located in the Pacific Ocean, east of the Sea of Japan, the People's Republic of China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north, the East China Sea and Taiwan, south. Characters of its name means "sun origin", which is why Japan is sometimes identified as the "Land of the Rising Sun."

Switzerland: it is a federal republic composed of 26 states called cantons with Bern as the seat of the federal authorities. The country is situated in Central Europe, where the border with Germany to northern France to the west, south Italy and Austria and Liechtenstein to the east.

Sweden, is a Nordic country, situated on the Scandinavian Peninsula in Northern Europe. Sweden shares land borders with Norway in the west and Finland to the northeast, besides being linked to Denmark by the Oresund Bridge in the south.