The land bridge over the Bering Strait was able to form due to low sea levels and an accumulation of ice buildup on the continents.
The effects of the global trade in silver were worldwide and linked the world in new and unprecedented ways.
Answer: extremes of wealth and poverty threatened democracy.
The nineteenth-century labor movement came about because of the workers need of protection of their common interest.
Americans in the industrial sector, organized labor unions to fight for better wages, fair working hours and safer working conditions. In 2009, almost 12% belonged to labor unions. The movement argued about extremes of wealth and poverty threatened democracy.
American women took the jobs of the drafted men and before the war most were housewives.
A goal of the Obama administration in the United states was to ease air pollution regulations to train people to work in green industries. The correct option among all the options that are given in the question is the second option or option "B". There was a huge uproar from the coal based power industries.
