Question

What theme best describes the first half of American history?

Answer 1

I think Slavery to Freedom 

Answer 2

The theme that best describes the first half of American History is: "Race, racial ideologies, and race relations",

which is the Coming of Age extending from the European Xenophobia legacy and its intercultural interactions across their settlement, the brutal importation of African slaves, the American Revolution and next building up to the Civil War.