Why did a money economy begin to replace the barter economy in the high middle ages

As wars halted trade, merchants found new work metal smithing or creating coins. As trade expanded to cover greater distances, a unit of exchange became more important.

Explanation:

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.

the answer is a the rich and poor get an equal share of the power and wealth

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