10%
According to this one article thing "Before the conference only ten percent of Africa was colonized by Europeans."
I believe it was Frederick Douglass.
There are no unemployment in a central economy because of their strategic financial planning.
Mesopotamia is located in the portions of modern day Iraq and some of its neighboring countries, between the rivers Tigris and Euphrates.
The fertile crescent Crescent included Mesopotamia, Israel and Egypt.
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They were able to get things quickly and more efficiently as this is a much faster process capable of producing higher volumes with less money.