social scientists suggested that the turbulence of the 1960s and 1970s was caused, in part, by .

Is the weather changing? consider the data of severe weather that includes tornadoes occurring throughout the u. s. over the last four years. compare the severe weather for the last three years. then compare the first three months of 2017 with that data. based on previous years, what might the prediction be for weather during 2017?

Between 1820 and 1860, the united states received a huge number of immigrants from european nations. on the map, identify the state where the most immigrants moved in search of jobs.

In 1983 nixon became the first us president to