How did trade, education and conquest help Islam to spread?

The Muslim practice of direct trade offered further exposure to the religion: Rather than working through intermediaries, Muslim merchants would travel to the trading destinations, thus allowing exposure to the religion within other countries as well.

Explanation:

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Trade, education, and conquest helped Islam spread because it spread the word to others that they should practice Islam. Trade helped spread the word between traders, education spread the word to students, and conquest spread the word to the newly conquered city's citizens.

Explanation:

no the answer is c only objects touching the earth's surface can be acted upon by an outside force

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clean air supplies oxygen that enables living organisms to breathe

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