1. Historically, the MOST significant geographic obstacle to the western migration of people from the east coast of the United States during the 19th century was
A) the Great Plains.
B) the Rocky Mountains.
C) the Mississippi River.
D) the Appalachian Mountains.

2.Which age group accounted for approximately 20 million males in the year 2000?
A) Age 0-4
B) Age 5-19
C) Age 20-29
D) Age 30-44

3.The Dust Bowl was one of the largest ecological disasters in World History. In the 1930s, storms of dirt and dust raged across part so the midwestern and southwestern United States. By 1940, 2,500,000 people had moved out of the states in the Great Plains. Roughly 10% of those people moved to California in hopes of finding jobs.
From the excerpt, you can determine that for people living in the Great Plains, the Dust Bowl would be considered a
A) push factor.
B) pull factor.
C) coastal front.
D) maritime tragedy.

1) Great Plains

2)Age 30-44

3)Push Factor

Explanation:

I've took the test yesterday and got those right.

the first phase of the government’s plan for settlement was building the transcontinental railroad. the railroad provided a way to bring settlers and manufactured goods west and ship their agricultural and mining produce east. the transcontinental railroad was an essential artery for rapid development of the frontier.

the second phase of the government’s plan was a liberal land distribution policy that made it possible for many people to homestead. with these two key elements—transportation and cheap land—the government rapidly achieved its goal of persuading people to move west, settle on farms, and push back the frontier.

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.