The functions of institutions of higher education in the U.S. are ________.

The origin of the American party system can be traced to ________.

The New Frontier and War on Poverty were put forward respectively by ________.

During the Second World War, Roosevelt, Stalin and Churchill met at ________.

In 1900, the United States ranked first in the world in the production of ________.

The three Puritan traditions are ________.

The average life expectancy of the Red Indians is ________.

A trend that occurs at the same time with the movement to the South and the Weast of the United States is ________.

The largest and smallest states of the United States are ________.

The Mississippi, which is sometimes called ________, has played a vital role in the history of the United States.