America is a nation of risk-takers. Most Americans are descendants (потомок) of immigrants who left the known of the Old World for the unknown of the New. The pioneers who lived on the frontier had a hard life, so they had to be tough and self-reliant.Frontier men and women were often facing new problems and situations which needed new solutions (решение Under these circumstances (условия), they soon learned to experiment with new inventions and new ways of doing things. This willingness to experiment and invent led to another American trait, a sense of optimism that every problem has a solution.The frontiersmen had to overcome (преодолевать The difficulties of the frontier also shaped the tradition of hospitality: if you didn’t take in the stranger and didn’t take care of him, there was no one else who would.As the people acquired (овладевать очень найти чувства американцев на английском​