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The Compromise of 1876 effectively ended the Reconstruction era. Southern Democrats' promises to protect civil and political rights of blacks were not kept, and the end of federal interference in southern affairs led to widespread disenfranchisement of blacks voters
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The cause of the first Christian Crusade was mainly because of the Muslim Turks invading and taking over the Holy Land. The effect of the First Crusade was that the Christians captured Jerusalem and other key cities