Guns,cannons and other helped in the majority of conquest
Answer:
I'm pretty sure it's the second option
Okie Migration
Roughly 2.5 million people left the Dust Bowl states—Texas, New Mexico, Colorado, Nebraska, Kansas and Oklahoma—during the 1930s. It was one of the largest migrations in American history. Oklahoma alone lost 440,000 people to migration. Many of them, poverty-stricken, traveled west looking for work.
Answer (A)
One of the primary effects of railroads on farmers is the decrease that railroads bring to farmers' transportation costs. Most obviously, it becomes cheaper to transport crops to the cities and ports. In addition, farmers can buy and transport industrial goods back to farms, including farm equipment and cattle.