What was the name of the series of conferences and studies that dubois wrote on black social conditions? the souls of black folk. atlanta university studies. notes on negro crime. the atlanta constituion.

The correct answer would be : The Souls of Black Folk

I hope that this helps you !

The souls of black folk

Apolitical machine ~ apex 

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !