Me it is due tomorrow with 2 or 3 just what in the boxes a nd who has what

Of the ones listed here, the factor that had the greatest impact on the eventual destruction of native americans' ways of life was the development of the a) automobile. b) highway. c) railroad. d) steamboat.

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Compound inequalities. , i’m being timed