The shift from hunting and gathering to raising animals and growing food on a regular basis is called

- three-quarters or two-thirds..

- "the constitution provides that an amendment may be proposed either by the congress with a two-thirds majority vote in both the house of representatives and the senate or by a constitutional convention called for by two-thirds of the state legislatures."

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an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.