The major physical feature that the pioneers crossing West had to contend with were the Rocky and Sierra Nevada Mountains.
These mountain ranges were treacherous and many died trying to find passages to cross.
It made it harder for immigrants to become citizens and made it so the president could imprison non citizens.
Edmund Hillary
Edmund Hillary and Sherpa mountaineer Tenzing Norgay became the first climbers confirmed to have reached the summit of Mount Everest.
Great Britain and Russia differed in military strategy because Great Britain centered on ground forces, while Russia developed its navy.
<h3>What are the ground forces and navy?</h3>
During World War II, The Army Ground Forces were one of the three independent elements of the Army of the United States, some other existing the Army Air Forces and Army Service Forces.
End-to-end of their existence, Army Ground Forces were the large-scale training organization of all time established in the US and the Great Britain also focus on ground forces as a military strength before World War I.
The US's Navy is the transportation service branch of the US Armed Forces and one of the eight clad services of the US, as a military strength Russia also developed their Navy before the time of World War I.
Therefore, option B is correct.
Learn more about the ground forces and navy, refer to:
brainly.com/question/19863947
I would say B but I may be wrong
