The longest-ruling chinese dynasty was the
a. hsia.
b. chou.
c. ch'in.
d. shang.
go to previous question.

- 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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