Who is to blame for the boston massacre

The first British soldier to fire was to blame for the Boston massacre.

Explanation:

It started with a small argument between the soldiers and the colonists. But it escalated and there was over 50 colonists. Soldiers were went to maintain order. The British soldiers were armed with bayonets to move the crowd but the colonists began to shout daring them to fire. Captain Preston arrived and tried to calm the crowd but got hit by a thrown object and knocked him down. That what it caused him to fire into the crowd.

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the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain