In which battle did Benedict Arnold and Ethan Allen capture a fort and secure
cannons and ammunition for the colonial militia?

Capture of Fort Ticonderoga

Explanation:

The Capture of Fort Ticonderoga occurred during the American Revolutionary War on May 10, 1775, when a small force of Green Mountain Boys led by Ethan Allen and Colonel Benedict Arnold surprised and captured the fort's small British garrison.

- 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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d. the right to establish a one-house legislature