TIME
Before the first Creek migration, there were only about one hundred American Indians in Florida because

Time before the first Creek migration, there were only about one hundred American Indians in Florida because most had moved west for better land and weather.

Explanation:

In Florida there were only one hundred Americans before the first creek migration as maximum of them moved to west in search of good land weather. The weather of Florida was not as such comfortable of weather like west. The weather of western states of United States were much more comfortable in comparison with Florida.

The migrants also need good agricultural land for their sustenance and to make their livelihood possible. The agricultural land and other facilities of Florida was not favorable for tribes.

2686-2181 bce-- "egyptian civilization developed along the nile river in large part because the river’s annual flooding ensured reliable, rich soil for growing crops."

1069-664 bce-- "ancient egyptians developed wide-reaching trade networks along the nile, in the red sea, and in the near east."