The answer to this question c
The use of labor-saving devices in industry and agriculture. So b is the correct answer
The agreement that divided Congress into a bicameral system, the Senate and the House of Representatives, is called The Great Compromise. It was the final result of a debate among the delegates on how representation would be set in the states. Delegates gathered in the Constitutional Convention and in the end, both small state and large state representatives agreed on this. The Senate called for equal representation, in favor of the smaller states The House of Representatives called for proportional representation, or representation based on population, which favored the large states.
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