What caused the Soviet Union to get involved in countries as diverse as Egypt, the Congo and Vietnam?

There were statements of the Soviet Union were involved in Vietnam's war deeper than commonly thought. War was organized by communists (agents of Moscow). The dead were about 3 million. Actually, Moscow and Communists Beijing were fighting with the US. Because Vietnam was extremely important strategical district for both these countries.

Explanation:

byzantine empire is the answer i think you are looking for.

hope this : )

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity