What was the direct cause of Britain's entry into World War I? A.
Germany threatened British control of the English Channel.
B.
The German invasion of Belgium violated the Treaty of London.
C.
Britain was bound by treaty to go to war with France and Russia.
D.
German U-boats began attacking merchant and passenger ships.

i think B.

Explanation:

i just looked it up comment if its correct plz

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.