Garrett Morgan invented an early version of a gas mask.
Passafist and was founded by gandi (give brainiest plez)<span />
The Industrial Revolution was one important feature of new imperialism, which not only freed the colonies and began the formation of an independent state, but also declared bourgeois liberties while retaining the slavery of blacks.
expenditure multiplier, the magnitude of how much real GDP will change in response to an autonomous change
