Cause Rosa Parks refused to sit in the back of the bus and was arrested for this. effect ​

Cause: the mother of the civil rights movement, made the decision to remain in her seat on a Montgomery, Alabama, bus because she didn't believe she should have to move because of her race, even though that was the law. In the middle of the crowded bus, Parks was arrested for her refusal to relinquish her seat on Dec. Effect: It was the first mass-action of the modern civil rights era, and served as an inspiration to other civil rights activists across the nation.

Explanation:

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early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.

b) the planets year length would be longer

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