Why is Ancient Greece significant in history? A. It was a starting point for Christianity
B. It was a civilization that was never conquered
C. It unified Greece and China
D. It began to develop democratic ideas

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:

c) he felt the constitution clearly gave states this right.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.