No "Americans" arrived in North America. However, in 10 A.D. Vikings explored the fringes of North America. Also, Native Americans crossed over from Siberia into Alaska over a land bridge about 12,000 years ago. In 1501, Amerigo Vespucci officially discovered America but thought it was Asia so he did not dock. Then in 1592, Christopher Columbus found and docked in the Caribbean and was the first man to land on America.
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Russia concerned both of them because at that time in the war Russia was the powerhouse, they had it all, technology wise and climate wise. They could not be attacked because of their harsh winters and they could attack at any time because they had the upper hand in military technology.
They were killed cause they ran they mouth
Textile mills, merchants, and Northern American workers were afraid that freed African Americans could take their jobs.
I dont know what is that and you know i m not brainy i m sorry i dont understand please give me a second chance to help you sorry i did not answer yet