Lincoln freed the slaves by signing the emancipation proclamation.
England because the US was to strong for japan and England was right there beside them
America helped Russia and Japan in the world war I. Therefore America emerged as the most powerful country in the world. America had power of Foreighn policies and had a much stronger effect after the shock of unexpected world war II.
Assembly lines is the correct answer!
C. framers sought a compromise on the issue of state representation in congress
