Because, like shaking your head yes or no, it is understood by everyone, regardless of region or country.
Vilnus is the capital of Lithuania - a small country in Eastern Europe, on the Baltic Sea, which used to be one of the Soviet Republics before the split-up of the Soviet Union.
Despite being Lithuanian's biggest city, it has a big Polish population and it was once in Poland, not in Lithuania - which was a reason for a conflict between the two countries.
The united states and Canada share many geographic features, including the great lakes, the Rocky mountains, and Atlantic and pacific coast
Pacific coast cover the west coast of Canada and United states while the Atlantic Coast Cover the eastern part
hope this helps
All of these affect it in some way
Location
Place
Human-Environment Interaction
Movement
Region