A family that traces its bloodline to America’s first enslaved Africans said Friday that their ancestors endured unimaginable toil and hardship — but they also helped forge the nation. “Four hundred years ago, our family started building America, can I get an Amen?” Wanda Tucker said before a crowd in the Tucker Family Cemetery in Hampton, Virginia. Tucker, a college professor in Arizona, spoke at one of several events in Virginia this weekend that will mark the arrival of more than 30 enslaved Africans at a spot on the Chesapeake Bay in August 1619.