People started making and using tools. These tools enabled them to start the agricultural revolution and settle around river valleys. Now, they could just live at a single place instead of running around searching for food. They could grow their own food, and still go and hunt when necessary.
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Search up AP World History Unit 6 Test & it shows some results on quizlet, check those out.
Answer:
The election of a Republican, Abraham Lincoln, to the presidency of the United States and fears that Republican control of the executive branch would threaten slavery and the traditional rights and liberties of Americans precipitated the secession crisis in Texas and elsewhere.
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Answer:
an article added to the US Constitution
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thats it
