Can anyone solve this it's maths i choose histroy by wrong

Which piece of legislation signed by lyndon johnson brought an end to barriers preventing minorities from participating in elections?

In the mid-1800s, how did american indians often react to the us government signing treaties with tribal chiefs to establish reservations? many american indians did not accept the treaties and resisted relocating. many american indians fought for land taken away by the dawes act. many american indians bought land in oklahoma from white settlers. many american indians accepted the treaties and relocated voluntarily.

What event did not contribute to the start of ww11