What is considered to be america’s first big business that with the development of other industries

railroads were the first big business in america that helped with the development of other industries.

Explanation:

Using railroads and trains, other goods were transported from place to place, giving other industries the supply's they needed to grow!

Railroads

Explanation:

Right after  the decadesthat  followed the Civil War, the United States brilliant emerged as an industrial giant full of energy and space to grow to all directions , specially to the country side. Old industries expanded, changed some business and got many new ones, It refers to petroleum drilling, steel manufacturing, and electrical power, rubber exploration and others emerged. Railroads expanded significantly, bringing even remote parts of the country into a national market economy. With those railroads the country was literally united and walking as a unique body, growing as fast as they could, expending and making the country what it is today.

ford’s revolution of the assembly like to make cars less expensive

explanation:

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.