Houston Texas became the home to NASA Mission Control.
There are any number of things: offer a tax incentive, offer the sale or use of state land, offer fewer government restrictions, or provide better infrastructure such as roads, bridges, and transportation. Anything that makes operation costs cheaper, or business activities easier, can prompt a company to relocate part or all of their operations to another state, or even another country.
Farm workers moved to southern cities.
Abortion rights.
Rights to tribal self-rule, federal aid for education, and federal aid for healthcare.
As the South's population grew, so did the South's political influence. (apex)
Agriculture was modernized in the south in the late 1900s with the use of automobiles, trucks, and planes to transport crops all over the world.
Some became active in politics. (Apex)
Attacking Democratic politicians
They became active in politics