The answer is option D "a document made by someone who actually saw an event." A primary source would be like a witness during a event. They can give reliable information on what happened during that event. Main primary sources are: documents, pictures or photographs, and objects that can explain what happened during a event.
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Answer:
b.) latin Crusaders turned against the Byzantines, leading to the loss of much territory:
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i think its, Representative Democracy. as Direct Democracy doesn't work for Big Cities
