The ability to use an applied force to make an object move
Although there are numerous factors that can affect a counties GDP, especially today when the entire world is so "connected", a major reason why GDP fluctuates so much in this part of the world is that these economies rely primary on agriculture, which can be profitable one year and then not profitable the next, due to weather changes.
Some think it was called this because of how the skin turned dark at the late stages of the disease, but it was more likely called "Black" to reflect the dark and horrible time in history.
a. rose
The quality of life of the Americans has improved because of the Great Society introduced by President Lyndon B. Johnson in 1964. It aims to put an end to poverty and racial injustice. High school graduation rates also rose following the implementation of several Great Society programs.
The involvement of the United States in the Vietnam war eliminated some of its programs, but others like Medicare, Medicaid, the Older Americans Act and federal education funding, remained.