a) Whitman massacre is the correct answer .
Divided
Ben Franklin made a political cartoon saying "Join or Die" trying to get the 13 colonies to unite together because they were so divided
The correct option is D.
The development of agriculture opened the way of civilization for native Americans in Mexico and South America. The cultivation of maize in large quantity especially brought about trading with neighboring cities and towns and open up irrigation system and increased the population density of Mexico and South America.
Colorado was the first state to allow women the right to vote.