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.

- "it was a failure that was an embarrassment for the kennedy administration."

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the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.