Part of it was because of the Industrial Revolution and the invention of the cotton gin by Eli Whitney.
They agreed Missouri could be a slave state while, Maine was admitted to be a free state.
The access to power was the direct result of the REA for farmers.
REA is the Rural Electrification Act (1936).
The REA was part of a program from President Frankling Delano Roosevelt designed to overcome the effects of the Depression years.
In 1935 only ten percent of isolated rural areas had electrical power.
The REA law granted long-term funding for farmers in the form of loans which were allowed to be given for states and territories to implant, improve and maintain rural electrification in the United States.
Slaves in colonies worked in rice,tabacco and sugar cane crops the working day were from day to late evening and at night they sleep on benches and on the floor (HOPE THIS HELP YOU)