Please help me with these two questions

Characteristics of what type of economic system are being described below? 1.economy in which some/all of the basic economic questions answered by central authority 2.trade generally limited to what is produced through the influence of the government a.command economies. b.market economies. c.traditional economies.

Which is the best description of a political campaign tactic during the ele tion of 1828

Which physical subsystem includes the air we breathe