The period of the crusades lasted nearly:
200 years
250 years
1000 years
100 years

The period of the Crusades lasted nearly 200 years.

Explanation:

The crusades were a series of military campaigns promoted by the Pope and carried out by a large part of Christian Latin Europe, mainly by the France of the Capetians and the Holy Roman Empire. The Crusades, with the initial specific objective of restoring Roman apostolic control over the Holy Land, were fought over a period of almost two hundred years, between 1096 and 1291.

i think the answer is the one about environmental and social health.

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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.