Financial and military aid to troops on the ground: JFK supported the South Vietnamese with money and advisers. LBJ put soldiers on the front and began the draft increasing the US presence.
The Gulf of Tonkin incident, an attack on a US ship off the coast of North Vietnam, was the turning point for LBJ and the cause for troops being sent in for military action.
Answer: In many ways space science contributed to the realization of important space applications-which may be defined as the use of space knowledge and techniques to attain practical objectives. Indeed, at the start of the program numerous potential applications required much advance research, including some space science, before their development could begin. Moreover, to many persons the development of applications appeared as the ultimate payoff of investments in the space program. Although the scientists would probably not have put it so strongly, nevertheless they could appreciate that point of view. As a consequence space scientists often pointed to potential applications of their work as one of the justifications for giving strong support to science in the space program.
Yet, in pointing to ultimate applications as one of the benefits to expect from their research, the scientists encountered a strange paradox. Although not appreciated for most of the 1960s, it finally became clear that in many respects applications-the "bread-and-butter work" of the space program-found it more difficult to gain support, especially on the executive side of government, than did space science.
Yes because they have the resource
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However Truman vision for post war Europe was founded on the believe that concrete action was needed immediately to contain communism. As outlined in the Truman doctrine, the policy called for financial help to enable countries in western Europe to develop with an aim of ensuring that these countries were not attracted to the soviet union.