USA HISTORY

Detailed explanation-1: -Stream and river crossings, steep descents and ascents, violent storms, and the persistent threat of disease among large groups of travelers were the most common challenges. Disease was the greatest threat on the trail, especially cholera, which struck wagon trains in years of heavy travel.

Detailed explanation-2: -The hardships of weather, limited diet, and exhaustion made travelers very vulnerable to infectious diseases such as cholera, flu, dysentery, measles, mumps, tuberculosis, and typhoid fever which could spread quickly through an entire wagon camp.

Detailed explanation-3: -Most people died of diseases such as dysentery, cholera, smallpox or flu, or in accidents caused by inexperience, exhaustion and carelessness. It was not uncommon for people to be crushed beneath wagon wheels or accidentally shot to death, and many people drowned during perilous river crossings.

Detailed explanation-4: -Free land in Oregon and the possibility of finding gold in California lured them westward. At the same time, eastern churches wanted to teach American Indians of the Oregon Country their European ideas of “civilization.” Many simply hoped for a chance to start a new life.