How are the senate leaders chosen?

they are appointed by the president of the senate.
they are elected within each party.
they are elected by the whole senate.
they are appointed by the president pro tempore.

How many citizens of mexico does it take to equal the ecological footprint of the average citizen of the united states? it takes nearly three mexican citizens to equal the ecological footprint of the average u. s. citizen. it takes about 12 mexican citizens to equal the ecological footprint of the average u. s. citizen. it takes just over eight mexican citizens to equal the ecological footprint of the average u. s. citizen. two citizens of mexico equal the ecological footprint of one average citizen of the united states. they are essentially equal?

How and why did the policies of the federal and state governments toward native american people change between 1790 and the 1850s. what were the reaction of native american people to these policies?

Which one of the following statements is not true of the revolutionary war? a.) british casualties were twice as many as the americans. b.) british soldiers and loyalists left for england. c.) americans suffered greater casualties and destruction than britain