The correct event of following ;
beginning of the Cold War
beginning of the Korean War
launch of Sputnik 1
Vanguard 1 launched
Cold war refer to a condition of indirect war. it was occur in 1945 between United states of America and soviet union. In cold war world was divided into two blocks eastern block and western block. there was not direct war between America and soviet union but there was war in between their blocks. it was a 44 years long war which ended in 1991 after demolition of soviet union.
Korean war was the war between north and south Korea. it was started on 25 June 1950 when north Korea invaded in south Korea. it was 3 year long war ended in 1953. this war was a consequence of cold war because north Korea was supported by soviet block ans south Korea supported by America. this division led the war.
What was Vanguard?
Vanguard 1 was a small Earth-orbiting satellite. which was launched in 1958 to to test the launch capabilities of a three-stage launch vehicle and the effects of the environment on a satellite. vanguard 1 systems in Earth orbit. It also was used to obtain geodetic measurements through orbit analysis.
Sputnik 1 was the satellite of soviet union which was launch in 1957. Thus, after the successful test the year is mark as beginning of the space age. The successful launch shocked the world, giving the former Soviet Union the distinction of putting the first human-made object into space.
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