Answer:
Enabled the development of an atomic weapon based on the the theories of German scientists involving energy and matter is the correct answer.
Explanation:
The project that was started to develop atomic weapons during the second world war in US is known as project Manhattan. The project began in 1939 with the support of president Franklin D. Roosevelt. The project was kept secret and not even the vice-president Truman was informed about it. It was only after death of FDR that Truman was informed and given reports about this project. The theories and formulas such as Einstein's mass energy equation was used in the construction of atomic bomb. The scientists working on Manhattan project successfully tested the atomic bomb on July 16, 1945. The first bomb was dropped over Hiroshima on August 6, 1945.
Answer: The Civil War
Explanation:
The Civil War took place in America over an internal struggle. It was over two different beliefs and the country was divided over this idea. This led to a struggle that would be one of the bloodiest wars in american history.
Our first attempt at government was founded on the document known as the Articles of Confederation, but it failed.
<u>Explanation:
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Articles of Confederation, the first document which was attempted to be as a constitution to the thirteen colonies. This was an attempt to unite those 13 colonies. This was replaced by the constitution because the thirteen colonies were functioned autonomously but they couldn't integrate them.
Because the thirteen colonies feared coming under the central government, due to which taxes and trade policies couldn't be imposed on them. The articles also restricted the Congress to facilitate a common judicial system for the thirteen colonies too.