The Homestead Act of 1862 pulled settlers to the plains by offering 160 free acres of federal land to any American, including freed slaves.
In general when they need to get done with their basic requirements or their needs they fight for that if the authority didn't respond proply..
sequence like salary incresment.
then the Labour union strikes to win their requirement.
A).competition over land - they both wanted the Ohio River Valley
Regions rich soil and growing season, fostered the development of strong agricultural producing colonies.