The urban population of the united states increased dramatically after:

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.

explanation:

answer; i believe that the correct answer is (c) arctic tundra;

answer: a video that encourages an armed attack on the government.

explanation: it is a violent overthrow to the government.

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