Answer:
The American population first started has gone up since July 4, 1776. The population first started because of the 13 colonies, then once America became it's own country many people noticed. Causing many people to come and live here in America. America population has really gone due to many people moving here to start a better life. Also since people saw that Americans were living a better life so they decided to move here. The population has also gone up because of "job opportunities."
Answer:
The American population has changed (increase) dramatically. It isn't because of higher birth rates, but because of the job oppertunities or living conditions that are pulling more foreginer to come to America.
