About how many years has the earth been around?

- 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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definitely a for sure. ill see and update if i get the answer

is this like a kind of true or false question?

the magna carta   was the first document   brought upon a king to limit his powers