Poland

 Poland has a moderate climate transitional. The territory of Poland is spread across the Central European Plain. This region extends across the Baltic Sea in the North up to the Sudeten Mountains and the Carpathian Mountains to the South. The Vistula is the longest Polish river. Mount Rysy is located in the Tatra mountains, Carpathians. Lithuania and Russia share a border with Poland in the north. Belarus, Ukraine, Slovakia, Czech Republic, and Germany are located to the west and south. It has the maritime border with Sweden and Denmark. The beginning of the human presence in Poland goes back approximately 10,000 BC. The region was a diverse cultural area throughout the late the time of antiquity. It was home to tribes of Polans, who gave Poland its name in the first half of the medieval period. In 966, the granting of statehood was accompanied by the change of the pagan ruler of Polans to Christianity under the auspices of the Roman Church. In 1025, the Kingdom of Poland was established. It also began an ongoing connection with Lithuania in 1569. This led to the creation of the Polish-Lithuanian Commonwealth. It was Europe's biggest power at the time. With its unique liberal system of government that was the first in Europe, it adopted the continent's first modern constitution in 1791.