Taxation without representation, was their main issue. they wanted to be a free nation.
Answer:
Very many.
85% - 95% of Native Americans have died due to disease from Europe, with Europeans exploring the New Continent, and animals being brought over from Europe, most couldn't fight the diseases.
Answer:
In a pure democracy every person, that is allowed to, votes on every matter. For example, ancient Greece was a pure democracy because every eligible man voted on public problems every week. In a republic, the people vote for electives to then vote on these problems for them, but they do not vote themselves. America is a republic because we vote people into congress to then vote on laws.