Where were the main four settlement locations for immigration the united states in 1900?

What is the name for the main idea behind the settling of western lands by americans in the early-1800s?

Beaches are landforms that run parallel to the

Which of the following arguments decided the debate over using the atomic bomb against japan in 1945? using the bomb would destroy the armaments still available to japanese forces in japan. using the bomb would demonstrate the power of the united states to the entire world. using the bomb would shorten the war and avoid heavy casualties among invading troops. using the bomb would enable allied forces to invade and take over the japanese mainland