US CITIZENSHIP TEST PREPARATION

Detailed explanation-1: -Mountain ranges, rivers, and bad weather often made traveling west difficult.

Detailed explanation-2: -Obstacles included accidental discharge of firearms, falling off mules or horses, drowning in river crossings, and disease. After entering the mountains, the trail also became much more difficult, with steep ascents and descents over rocky terrain. The pioneers risked injury from overturned and runaway wagons.

Detailed explanation-3: -Answer and Explanation: The biggest obstacle was the presence of Native Americans who lived on the lands that people in the United States considered manifestly theirs.

Detailed explanation-4: -Americans have always had a yearning to move west and discover new lands. Along the way, our ancestors had to overcome many daunting natural barriers, the first of which was the Appalachian Mountains.

Detailed explanation-5: -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.