How were delegates selected to attend the convention held in Philadelphia in May of 1787? And, what were the specific purposes of this convention?

Delegates were chosen by each state's legislature. The Constitutional Convention in Philadelphia met to address the problems of the weak central government that existed under the Articles of Confederation (poor finances, states' power over federal, no army, etc.)

as the maasai legends tell, "in the beginning of the world, enkai was the only god: the guardian of rain, fertility, sun, and love. with that love, enkai birthed three sons." solución

regarding the law, the 15th amendment was specifically designed thinking in the rights of black free men.

even though ratified on february 3, 1870, the promise of the 15th amendment would not be fully applied for a long time.poll taxes and literacy tests would allow southern states disenfranchise african americans. only in 1965 the voting rights for african americans would be actually able to vote in the south.

in 1965, president johnson signed the voting rights act, which aimed to overcome legal barriers that prevented african americans from voting as it was guaranteed by the 15th amendment to the u.s. constitution.