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There are several reasons for the changes. The US purchased land from France known as the Louisiana Purchase and then they had an expedition by two people known as Merriweather Lewis and William Clark explored land along the Mississippi, Missouri, and Snake River and claimed any of the land that wasn't already the US's the US's (this included Oregon). Texas asked to join the US but Mexico didn't want to give it up so America a few wars with Mexico and got more land each time. Mexico also gave California to the US and the US bought some land from Mexico as well and Alaska and Hawaii voted to join the United States as well.
What else can I help you with?
Can the national government change state boundaries?
No
What happened on September 2 1949 that caused a sudden change in US-Soviet relations?
The Soviet Union set off an atomic bomb
What was the Red Scare in 1917?
What caused a fear of communism, and how did it change American policy
How did the convention of 1818 affect the boundaries of the US?
It set the border between the U.S. and Canada at 49 degree North Latitude as far west as the rocky mountains. And Us and Mexico
What caused the US to join the war 2?
The Bombing of Pearl Harbor
How did the new boundaries impact the people already living in Africa?
The new boundaries caused confusion and conflict.
Was they Haiti earthquake caused by constructive plate boundaries?
No. The Haitian earthquake was caused by a transform boundary.
What cause boundaries of congressional of Tennessee change after?
Population changes cause the boundaries of congressional districts to change in Tennessee. Glad to help.
How did European imperialism affect Africa after the Industrial Revolution?
Arbitrarily formed boundaries caused wars between rival tribes.
What was one change caused by european exploration?
european exploration caused much exploration of the united states and helped give us more knowledge of the world . european exploration has caused the us to be what is is today without them exploring to the west of europe the us would not be what it is today
What caused the Andes mountains to form?
They were formed by deposition and by convergent boundaries
How can crossing boundaries help us learn and grow?
Crossing boundaries help us to reach our potential in life i guess
What causes different kinds of volcanic mountains?
it can be caused by many things, such as hot spots, convergent plate boundaries, and divergent plate boundaries
How US differentiated or distinguished the states in US?
They drew boundaries.
How can wars affect political boundaries?
Borders often change after wars when winning armies hold new territory
How did life change when people came to the us?
Immigration had huge impacts on laws in the US, hence more people coming to US caused more rules to be reinforced.
Can the national government change state boundaries?
No
