Who unified the mongol and central Asians tribes to creat the Mongol empire

  Mongol leader Genghis Khan

Explanation: Mongol leader Genghis Khan rose from humble beginnings to establish the largest land empire in history. After uniting the nomadic tribes of the Mongolian plateau, he conquered huge chunks of central Asia and China.

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- 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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