What happened when the militia trapped the british inside boston?

by placing cannons captured from Fort Ticonderoga on top of Dorchester Heights to fire artillery down on the British. instead of than fighting, the British, who were already weak from the Battle of Bunker Hill, agreed to leave Boston peacefully.

Explanation:

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c. the dred scott v. sandford case,

it allows shippers to carry commercial goods, which allows them to save time and money.