What was the Challenger Space Shuttle's mission? Who was onboard? What caused the
disaster to occur?

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

the answer is heceta and bodega y quadra. i hope i you with this question!

less available tax revenue

this basically means that when they get money from taxes wirth having a lower gdp they get less then what others have with a higher gdp