Answer:
The Manhattan Project
Explanation: FDR started the project but was kept under secrecy so no other country would find out creating and testing nuclear weapons.
Answer:
n sociology, an ethnic enclave is a geographic area with high ethnic concentration, characteristic cultural identity, and economic activity. ... Thus by stimulating social connections, ethnic enclaves generate a pool of intangible resources that help to promote the social and economic development of its members.
Explanation:
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Building through the Sierra Nevada Mountains was very difficult and dangerous. Temperatures were freezing during the winter and in one year alone there were 44 storms.There was the great danger of an avalanche for the men working through 18 feet of snow and camping on the tunnels beneath it. Creating tunnels through the mountains required blasting with nitroglycerin. Advancing at one foot of mountain at a time, a total of 11 tunnels was created.
Answer:
Pollution and limited resources
Explanation:
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