Answer:
Option A. Boston Massacre was the event which occurred first among the given options.
Explanation:
It was the most dangerous and brutal riot that included bloodshed. It started as a petty scuffle on the streets between American Colonists and British Soldiers in the Kings Street. The massacre happened in 1770
American colonists were frustrated of the British soldiers’ supremacy and four soldiers were killed in. This riot paved way for the American Revolution.
The American colonists started to rise against the British troops for American independence.
The correct answer to this open question is the following.
The geographic feature of Mesopotamia that led to the Sumerians being easily taken over was the Tigris and Euphrates Rivers that made it easy for their enemies to navigate and invade them.
Sumeria was the oldest civilization known to man. Sumerians settled in the middle of the Tigris and Euphrates Rivers in the Middle East region. There, they developed agriculture techniques and learn how to use the flood of the rivers to grow crops in that fertile soil. That is how they prosper for some time until their enemies could access their city-states navigating through both rivers.
"If the ruling dynasty was wealthy, it would keep the Mandate of Heaven" is the best answer from the list, but it should be noted this was not always the case.