A is the answer because the natives American tribes wanted a better life
I believe it’s the first answer
B. the sinking of the Luisitania because it is what drove the United States into World War I.
There was so many casualties because enemies invaded malls,homes and others and the people didn't have enough time to evacuate.
The landscape, being mostly very flat, cause many Native American societies to be spread out over significant portions of land, while the climate made them have to adapt to a variety of temperatures. The resources forced them to rely heavily on corn and fish do the inability to plant other types of food.
