I want to know the answer to the following question:
The USSR launched their first space station on what date?
All the background I'm provided with is that "During 1969 and 1970, they launched six more Soyuz flights after Soyuz 3, then launched the first space station, the Salyut 1 laboratory designed by Kerim Kerimov, on April 19, 1971.". Is that enough to answer the question?