Because rivers like the nile, tigris and euphrates flooded in ancient times,
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a. people lived in a constant state of fear as to when the next flood would hit.
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b. land around the river was fertile and capable of supporting farming.
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c. the concepts of cooperation and democracy were founded
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d. those places were never able to form citizens.

Select the correct answer from the drop-down menu.during the (scientific revolution, renaissance, industrial revolution), european intellectuals rejected many teachings of ancient scientists promoted by the church. to replace flawed theories, scientists began researching and conducting experiments. they used critical and reasonable thinking to draw concrete conclusions. this also led to the (scientific revolution, industrial revolution, enlightenment). it was an age that focused on using reason for understanding laws of nature and identifying humans' natural rights.