What event in 1860 proved that slave states could be outvoted by free states?

In the mid-1800s, native americans who had lived in the westtraded their manufactured goods with settlers. were able to resist diseases carried by settlers. offered their services as guides to settlers. prevented settlers from moving onto their territory.

Unlike european immigrants, chinese immigrants in the 1800s faced

What are the biggest challenges facing the average american citizen today? explain.