What were three important influences on the growth of democracy in america

I believe the answer is: England, Ancient Rome, Ancient Greece.

Democracy initially come from ancient greece, but they use direct democracy, where people could directly vote for the legislations. The ancient Rome was the first one that make adjustment to the direct democracy and transform it into indirect democracy. England is the one that bring the concept to united states during the colonization.

federal power is further limited with a system of checks and balances that gives each branch of government a measure of power over the others.

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in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

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