The US supported French control in Vietnam to guarantee French support<span> in the Cold War, Truman aided </span>France's<span> efforts to regain </span>control<span> over </span>Vietnam<span>.</span>
Arab nations of the Organization of Petroleum Exporting Countries (OPEC) imposed an embargo against the United States and its allies as a response to the U.S. decision to provide military support to the Israeli in order to give the Israel a jump start in the post-war peace negotiations.
Trade was the motivating factor. The silk road accross Asia was besieged by bandits & required bribes to a number of nations to transport goods to & from Asia. Therefore a sea route would be a much safer & less expensive means of getting trade goods to & from Asia.
September 9th 1850 by the compromise of 1850