Answer: " the bystander effect " .
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Answer:Education, work with Church and Spread of Christianity are what helped to unify the Carolingian Empire.
Explanation: Carolingian Empire can be described as an empire in western and central Europe in the middle ages.
Charlemagne was the first Frankish king who united most of the territories of Western and central Europe. He dashed or gave out money and land to the Christian church and protected the popes, He built a school in his palace and employed the best teachers to teach in the school.
Having enough ports that transported the different goods for trade allowed trade to flourish in Rome and Greece. These ports had ships that made transporting of trade goods to different parts of the world convenient. Rome established a very good port system during the ancient times.
Http://studylib.net/doc/8860627/patriots--loyalists-and-%E2%80%9Cundecideds%E2%80%9D
this website can help you find your answer, i do not want to do the researching for you so just go look at the site and read a bit.
Hope i helped :)
B is the answer.
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