HELP ASAP PLEASE IM TIMED How did trade deals made by Muslim merchants affect the medieval world?

People agreed to help pilgrims as they traveled.
People were allowed to immigrate to new areas.
People were able to pay less money for foreign goods.
People from different areas were able to interact peacefully.

D.People from different areas were able to interact peacefully.

Explanation:

i got it right on the test

by 1890, the united states had by far the world's most productive economy. american industry produced twice as much as its closest competitor--britain. but the united states was not a great military or diplomatic power. its army numbered less than 30,000 troops, and its navy had only about 10,000 seamen. britain's army was five times the size of its american counterpart, and its navy was ten times bigger. the united states' military was small because the country was situated between two large oceans and was surrounded by weak or friendly nations. it faced no serious military threats and had little interest in asserting military power overseas.

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report examines the threat posed by al qaeda affiliates in the middle east and africa as described

by u.s. officials and outside observers, as well as the u.s. approach to date in responding to these

threats. this was all i could find hope this : )