Answer: D. The trails connected the East to opportunities on the West Coast.
Step-by-step explanation:
The Overland Trails to the West Coast counted with more settlers rather than traders, traveling in family groups coming from all parts of the United States to seek for opportunities on the West Coast. The trains started in Independence, Missouri, pass through South Pass, down to the Snake River until reach their final foal in Oregon's Willamette River valley. The entire muddy and dusty travel would last for six months, and thousands of people decided to follow the arduous journey. Within the discovery of gold in California in 1848 brought 30,000 new pioneers and peaked in 1850 where the annual count had risen to 55,000.