Why was the Roman Empire the center of the ancient world

Founded on the banks of the Tiber river in 753 B.C., according to legend, by Romulus and Remus, Rome was first the centre of the Roman Republic, then of the Roman Empire, and in the fourth century, became the capital of the Christian world. Ancient Rome was followed, from the 4th century on, by Christian Rome.

Explanation:

in mcculloch v. maryland (1819) the supreme court ruled that congress had implied powers under the necessary and proper clause of article i, section 8 of the constitution to create the second bank of the united states and that the state of maryland lacked the power to tax the bank.

gibbons v. ogden, (1824), was a landmark decision in which the supreme court of the united states held that the power to regulate interstate commerce, granted to congress by the commerce clause of the united states constitution, encompassed the power to regulate navigation.