India's desire for Independence, which was how the country expressed its nationalism, goes back to 1850s. One of the major aspects of the growth of Indian nationalism prior to WW2 was Gandhi's policy of non-cooperation with the British, which was a part of the "Quit India Movement", urging the British to withdraw from India.
President Kennedy, in those words from his inaugural speech in 1961, wanted to urge Americans toward public service and global service. Kennedy was instrumental in establishing the Peace Corps, which was put into place not long after his inauguration (already in March, 1961). The Peace Corps enlisted Americans as volunteers to give their time to serving underdeveloped nations in the world.
1.Source: Excerpt from Olaudah Equiano’s “the interesting narrative of the life Olaudah Equiano, or Gustavas Vaasa, The African
2. This is a first hand account of a persons experience as a slave so it is a primary source, making it reliable
3. They did not come by choice, they were sold and forced to come to America on a slave ship