<span>c. proportional representation</span>
Answer: Igbo-Ukwu is notable for three archaeological sites, where excavations have found bronze artifacts from a highly sophisticated bronze metal-working culture dating to 9th century AD, centuries before other known bronzes of the region. Later, these were excavated as well.
Explanation:
Vertical integration, a business strategy used by steel mogul Andrew Carnegie, involves "<span>A.) merging with companies producing similar products," since this often leads to increased profits for the company that is in charge of the merger. </span>
The Emancipation<span>Proclamation is the event in history that Seidman says occurred in direct violation of the Consitution.</span>