it... isn't.
even if you're taking specifically US history, you'll learn about historical black figures such as harriet tubman and martin luther king jr.
if you're taking a broader world history, your argument collapses entirely since you'll learn about the old east and central asian empires with their figures, hispanic/indian/black revolutionaries, as well as the muslim caliphates, crusades, african empires such as ancient egypt and mali, the european wars against the tribal natives of assorted colonized areas, etc. |