PLEASE HELP ILL MARK BRAINLIEST AND GIVE 30 POINTS JUST HELP ME What is the most significant cause of conflict in the 20th century???

The three wars of the 1900s with the highest number of civilian and soldier fatalities were World War II, World War I, and the Russian Civil War, respectively.

Explanation:

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answer: the correct answer is d. a christian revivalist movement in the u.s. during the early 19th century

explanation: the second great awakening was lead by the preachers of baptist and methodist congregations in order to gain support for the protestant religion from the 1790's to 1840's

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.