Nearly 90% of Canada's population lives within 100 miles of the border of the United States. The correct option among all the options that are given in the question is the last option or option "D. The main reason for such population density within a specific region is that the central and north of Canada are mainly desert and Tundra.
Switzerland is correct answer.
Switzerland is a country it has a direct democracy.
Hope it helped you.
-Charlie
The correct answer is President Franklin D. Roosevelt.
Roosevelt started the Manhattan Project after receiving a letter from Albert Einstein which warmed him of the advancements made by German scientists during World War II. After hearing about these concerns, FDR wanted to ensure that the US would be ahead of Germany in terms of the development of the atomic bomb. Roosevelt knew that if Germany beat the US to this development, it could be extremely dangerous for the entire world.
