When you travel west you will travel through many obstacles. Like the rocky mountains and the mountains were very diffult to get around. The trails led them through the mountains. Winter snow (cold & ice) and spring rain (mud).
Obstacles While Traveling
Many people moved to working in the factories instead of working on the farm. Cotton prices fell and the cotton destroyed the soil and ripped it of its nutrients. Also the boll weevil destroyed cotton crop by eating it up. These two things forced farmers to stop farming and find job elswhere. Troops were also pulled out of the South and African Americans had to protect themselves from intimidation by Southerners used against them.
The End Of Reconstruction