Answer:
Once early civilizations developed, they continued to change over time. Factors such as the environment, conflicts, and the movement of people and ideas affected civilizations and led to change.
It warned Roosevelt that Germany was developing an atomic bomb and encouraged him to start a nuclear program in the US that later became the Manhattan Project
Answer:
A. there were factory Jobs available
Explanation:
option a is correct answer
The open door policy was principles that was installed in 1899 and then the 1900s to Have a protection of equal or even trading among countries
