What effect did chemical weapons, tanks, and submarines have on WW1?
(Written response)

Explanation: they made the war a lot deadlier and they almost ended the trench warfare stalemate. they also marked the beginning of modern warfare

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ok it is truth cause i have that 2

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.