Answer:Sinking of American merchant ships
Explanation:In early 1917 Berlin forced the issue. Its declared decision on 31 January 1917 to target neutral shipping in a designated war-zone became the immediate cause of the entry of the United States into the war.
Answer:
True
Explanation:
A factor that led to the growth of the factory system in the United States was the development of new power sources. True.
Answer: california, new mexico, and texas
Answer: Great Depression & Unstable Economy
Explanation:
Answer:
Height of power, systematic weaknesses.
Climatic worsening and plague.
Crisis of the Third Century.
Reunification and political division.
Growing social divisions.
Explanation:
thats all