Answer:
I am not sure what Mi, Intro, and Done have to do with the question, but I answered the best I could other than that.
Explanation:
Push factors: Help people decide to leave home, include safety problems, include economic problems.
Pull factors: Include a safer environment, Help people settle in a new place, Include economic opportunities.
In 1881 he invented one of his most important discoveries.
It was for the production of a carbon filament, or thin strand, for electric light bulbs.
It's main purpose was to abolish slavery!
