In what year did the soviet union test the first successful ICBM ?ICBM was the name of that ICBM?

Answer 1

The Soviet Union tested its first successful intercontinental ballistic missile (ICBM), known as the R-7 Semyorka, in 1957. The test occurred on August 21, 1957. The R-7 was significant as it was the world's first ICBM and later became famous for launching the first artificial satellite, Sputnik, in October 1957.