Concept of voter turnout and describe trends in voter turnout over time in the United States

Explain the concept of voter turnout and describe trends in voter turnout over time in the United States. Describe some of the factors that influence rates of voter turnout. Why do voting rates in the United States lag significantly behind those in most other developed countries. What reforms might be pursued in the United States to increase voter turnout in elections? Do you think reforms should be implemented in an effort to increase voter turnout in the United Sates? Please explain your answer.