Why did the manor system fall apart during the plague? Workers died or moved to cities.
Many laborers moved to the country.
It was safer for workers to live in cities.
There were too many laborers to support.

A. Workers died or moved to cities

Explanation:

It was right on the test

well its is frequent rain

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the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.