HELP PLEASE ASAP What is the product of any integer and -1?​

Name the most appropriate metric unit for each measurement

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

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.