What inventions and ideas have changed how we live? Science:

Transportation:

Communications:

Medicine and Biology:

Weapons:

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?

Was american neutrality between september 1939 and december 1941 a tragic mistake

How was the creation of money handled under the arrival of confederation