Me
eli whitney developed the idea of "interchangeable parts" when working on
a) firearms.
b) oil wells.
c) steel plows.
d) the cotton gin.

Best guess D) the cotton gin
hope that helped :)

hi there!

question - in the 1900s there were two competing views about the environment that often pitted industrialist and conservationist against one another. how were these two competing views demonstrated by the environmental policies of president roosevelt and president taft?

theodore had a quicked tempered personality while president taft was shy and barely noticable.theodore had started a dealing service with big companies which president taft completed.both were into making sure workers were always safe.president taft took the presidency more serious than theodore did.both loved to save nature.

hope this : )