What was one important effect of the Supreme Court's ruling in Gibbons v.
Ogden?

Ogden, 22 (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.

Britain and its empire stood alone against hitler and mussolini. in june 1941, hitler broke the non-aggression agreement with stalin and germany invaded the soviet union. in december, japan attacked the us and britain. the main lines of world war ii had formed.