The river that forms the border between mexico and the us state of texas is the a. baja california b. amazon river c. rio grande d. colorado river

How did the movement of soldiers during world war 1 contribute to the global influenza (flu) pandemic of 1918 to 1919, which killed millions of people

What could the united states of america do to improve their status? name at least 3(ap human geography)

Which revelation resulted from the observation of the spectrum of different galaxies? a. there were more galaxies whose spectrum was blueshifted b. there were no galaxies whose spectrum was redshifted c. there were more galaxies whose spectrum was redshifted d. there were no galaxies whose spectrum was blueshifted