America modeled its Constitution on which country’s form of government?

Switzerland

In 1847 and 1848 a wave of democratic revolutions swept through Europe. A brief civil war in Switzerland resulted in a new constitution modeled after the United States Constitution, which transformed the government of Switzerland from an alliance of republics to a federal nation.

Explanation:

answer; /// the correct answer is evidence of the olmec civilization has been found in southern american in a hot steamy forest, archaeologists have found earthen artifacts at several sites that were evidence of the olmec civilization. these   artifacts were mounds,courtyards and pyramids build of stones, also on top of the mounds were many monuments made of stone, some of these stone structures are very large, they weigh as much as 44

uncle sam would be tossing and turning in his grave : *)