How did Constantine change the organization of the Roman Empire when he came to power?
O He moved the capital to the city of Byzantium.
O He created a tetrarchy with four separate districts.
He created independent states for each ethnic group.
He removed Christian leaders from positions of power.

the answer is A He moved the capital to the city of Byzantium.

Explanation:

- 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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the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.