High level of technology.
Answer:
The United States. They became the first and only nation to use an atomic weapon during wartime.
Answer:
Great Depression
Explanation:
There is a very good argument to be made for the notion that the Great Depression had a greater effect on federalism than did the Civil War.
The Great Depression of the 1930s brought economic hardships the nation had never witnessed before. ... In contrast to dual federalism, it erodes the jurisdictional boundaries between the states and national government, leading to a blending of layers as in a marble cake.
A mid-ocean ridge is formed from lava. answer is lava
