<span>The Spanish Civil War (1936-9) was a very important event during the tense1930s in Europe. Although it did not make World War II inevitable, it increased the likelihood of a general war a great deal. The war had a tremendous impact on Spain itself, leaving much of the state's economic and social infrastructure in ruins and leaving thousands dead. But the war also saw involvement from other European states as both sides of the conflict - the Right-wing Nationalists and the Left-wing Republicans (a.k.a. Loyalists) - requested and received foreign aid not only in terms of financial assets, but also in terms of war material and troops. Adolf Hitler's Germany was one of the foreign countries most involved in the conflict, contributing economic loans as well as several thousand troops to the Nationalist cause. Hitler's involvement in the Spanish war was consistent with a larger Nazi foreign policy aimed at diverting British and French attention from Central and Eastern Europe so that he would be unhindered in his plans for eastern expansion.</span>
USA intervened in Korea and Vietnam as war efforts and in Greece and Turkey as coups.
Explanation:
In Turkey the US government aided a coup by the military to overthrow the government which in turn led to a regressive government to be placed in there.
A similar thing happened in Greece when a socialist party was elected into the Country with affiliations or alleged ones with the Soviet Union.
Korea was invaded by the USA in support of the south during the Korean war so as to stop the communist North from taking over all of the Korea under the influence of USSR.
Similar thing happened in Vietnam but it was not successful and Vietnam did fall to the communist army after US departure.