Did alexander hamilton signed the constitution

Yes, Alexander Hamilton signed the Constitution.
The Constitution was signed by 39 people, and Hamilton was one of them, representing New York. The signing of the Constitution happened on September 17, 1787, in Pennsylvania. These 39 delegates represented 12 states (all came except for Rhode Island). 

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful