which invention was achieved by the mayans?

a building their capital city on an island

b creating small islands to grow crops

c developing a complex system of writing

d making bronze tools

One argument of those who supported the gold standard system in the united states was that the gold standard

Since so many american men during world war ii were fighting overseas, the factorices lay empty. this presented a problem the u.s. military was in such dire need of manufactured goods bullera, tanks, airplanes , ships, and many other things. whose point of view si best reflected in these lunes?

What would be considered a secondary source about the assasination of abraham lincoln