The President of the United States cannot unilaterally start a war; this power is shared with Congress. While the President can deploy military forces and respond to immediate threats, the War Powers Resolution of 1973 requires the President to consult with Congress before engaging in sustained military action. Ultimately, Congress holds the authority to declare war, although in practice, presidents have often acted without formal declarations.
Woodrow Wilson was the US President during this entire war.
Truman at the start and Eisenhower at the end
woodrow wilson
Franklin D Roosevelt was the US President at the beginning of WW2.
Franklin Roosevelt
No, he needs the approval of Congress and no President has sought that authority since FDR.
Hannibal Hamlin
Franklin Roosevelt was the US president when WW II began in Europe.
At the start of WW II, the President of the US was Franklin D. Roosevelt.
Franklin Roosevelt was the united states of America's President when world war 2 started.
No- the US was at peace while Tyler was president. The US was on the verge of war with Mexico and Great Britain .
Franklin D Roosevelt (US President) and Neville Chamberlain (UK Prime Minister)