Help me with plz I beg u plz plz

What was the direct cause of the u. s. entry into world war ii? a. the bombing of pearl harbor b. the invasion of poland by germany c. the capture of belgium by germany d. the battle of britain

How would having more railroad tracks be advantageous during a war

Which of the following colonies would most likely have agreed with this stamens the king of england knows what is best for the colonies