19. The factors that brought about the devastation of the Dust Bowl
included the damming of western rivers and over-irrigation
included drought, high winds, and farming methods
were strictly a result of natural causes, not human practices
were all a result of unwise agricultural practices

included drought, high winds, and farming methods

Explanation:

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answer: (fluidity)is the correct answer.

explanation: because of this characteristic, success on the battlefield depends in large part on the ability to adapt to proactively change events to our advantage as well as to react quickly to constantly changing conditions