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The Reconstruction ended with President Rutherford's order for federal troops to leave the southern states. Thus, with Rutherford's election in 1876, in one of the most disputed elections in the history of the United States of America, Reconstruction was at an end.
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Reformers in the U.S. adopted the idea that students should have access to the same content at similar grade levels.
The United States tried very hard not to be involved in the war. At first all they did was help out their allies with food and other supplies. They didn't actively join the war until December 7, 1941 when Japan bombed pearl harbor. They officially declared war against Japan and soon after Germany.
Explanation:
The main reason for this was slavery. The US did not want to annex Texas because doing so would have upset the balance between slave states and free states that had been accomplished with the Missouri Compromise of 1820. When Texas became independent, it wanted to join up with the United States.