How was the change in powers of Congress in the Constitution an improvement over the articles of confederation?

What are the importance of science in transportation? Who were some of the companies that Lehman Brothers financed at the turn of the last century 1900s? Which battle turned the tide of World War 2 in favor of the Allies? What dollar bill is Benjimen Franklyn on? What is pre-colonial sports? Where was the hub of music during the early to middle of the middle ages? What is the name for a Large ship on a regular shipping line? Who led the Soviet Union at the end of the Cold War? What did the black power movement encourage people to do? How many Hall of Fame football players went to college at PSU? Site of the first Allied offensive in the Pacific a savage struggle in the Solomon Islands that lasted? What helped to protect Japan from invasion? What ethinicty is Jaime Escalante? Many historians believe that the main cause of the Salem Witch Trials was a conflict between what two things? Who is the pioneer of the modern American space program who caused to the US from Germany after World War 2? Was Rodney Peetes father a coach in the NFL? What hemisphere is lisbon portugal in? When and where did baseball player Dan McFarlan play? What economic and social factors in the US led to differing ideas about slavery in the north and the south? Who was the oldest president when taking office?