The yearly flood of the Nile was caused by

Melting snow and heavy summer rain in the Ethiopian Mountains sent a torrent of water causing the banks of the River Nile in Egypt to overflow on the flat desert land.

Explanation:

Melting snow and heavy summer rain

Explanation:

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disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.

the government closely monitored its finances to avoid another financial collapse.