Answer:
It was the quest for westward expansion. The Manifest Destiny called for the US to fulfill the divine mission to expand and dominate the whole continent. After the independence, the US moved westward step by step: the Louisiana Purchase, Texas, the Mexican-American War. This last event allowed the US to increase its territory, incorporate California and reach the shores of the Pacific Ocean.
Explanation:
After the slavery was officially abolished in all of the US, the African Americans were quick to move out of the South and migrate massively toward the North. There were several factors as to why this happened. One big factor was that even though the slavery was abolished, the segregation and discrimination continued, so the opportunities in life were very limited. The South was not industrialized, while the North was heavily industrialized, thus the African Americans saw an opportunity to work in the factories instead in the fields. The atmosphere in the North was much better for them, as the majority of the people welcomed them and had no problems with them because of their skin color.
Unconstitutional sounds like the most probable choice
Answer:
Louis Sullivan
The international style
Explanation:
Louis Sullivan designed some of the most admired American skyscrapers during the 1950s and 1960s. The international style architecture emphasized clean lines, geometric (usually rectilinear) form, and an avoidance of superficial decoration. The "bones" of a building were supposed to show and to be the only ornament necessary. a clasic example of this pure style is Lever House.