Tensions rose between britain and the colonies when the left crispus attucks and four others dead.

The answer is Boston Massacre

Explanation:

Tensions rose between Britain and the colonies when the Boston Massacre left Crispus Attucks and four others dead.

The Boston Massacre was a dreadful riot that took place in Boston on March 5, 1770. The rioting began as a street confrontation between a lone British soldier and  American colonists but quickly escalated to a bloody slaughter.

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