The ancient Egyptians were able to predict when the Nile River would flood?

These facts were unknown to the ancient Egyptians who could only observe the rise and fall of the Nile waters. ... Akhet covered the Egyptian flood cycle. This cycle was so consistent that the Egyptians timed its onset using the heliacal rising of Sirius, the key event used to set their calendar.

Explanation:

what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations