What organization masterminded the september 11, 2001 terrorist attacks on the united states?

How long does each side take in a supreme court case to make its oral argument

In an economic downturn, what can happen in countries that depend on high taxes to fund social programs?

Which impact did the civil war have on the spread of disease in texas a. disease decreased bc people left the area to fight in the war b. disease increased bc medicine was in short supply. c. disease increased bc many new diseases were brought to the area d. disease decreased bc confederate doctors distribute new medicines to local communities