During the period of the crusades, warfare between christians and muslims lasted nearly

During the period of the crusades, warfare between Christians and Muslims lasted nearly 200 years.

Explanation:

The crusades were a series of military campaigns promoted by the Pope and carried out by much of Christian Europe, mainly by France and the Holy Roman Empire. The crusades, with the initial specific objective of restoring Catholic control over the Holy Land, were fought over a period of almost two hundred years, between 1096 and 1291. Later, other campaigns in Spain and Eastern Europe, of which some did not see its end until the fifteenth century, received the same rating.

the answer is c, all the other options are things they are known for.

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on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.