Answer:
Humans are driven to explore the unknown, discover new worlds, push the boundaries of our scientific and technical limits, and then push further
credits -
https://www.nasa.gov/exploration/whyweexplore/why_we_explore_main.html#:~:text=Humans%20are%20driven%20to%20explore,limits%2C%20and%20then%20push%20further.&text=Human%20space%20exploration%20helps%20to,history%20of%20our%20solar%20system.
Crowded and unhealthy conditions
My best guess is the influx of Midwestern farm families
You might be able to get some answers from this www.history.com/topics/1980s
The answer I got is many Americans embraced a new conservatism in social, economic, and political life during the 1980's.
