What was the main concern with the first draft of the articles of confederation

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

Give an example to prove that your society is developed more than it was before 10 years ?

What are the most populous and least populous areas of russia? and why are some areas more heavily populated than others?