Is when a business buys enterprises at each phase of production

Vertical integration, is the right answer.

Explanation:

When a company controls more than one platform of the supply chain, it is known as "Vertical integration".  It is basically the process through which businesses used to turn a raw product into a final product and supply it to the consumers. This strategy can help businesses reduce costs and increase efficiencies by minimizing transportation charges and reducing the turnaround time, among other assets.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.