Ussr
As far as is known to the public, the USSR (Russia) was.
false
No. The USSR was, and the USA was next.
Chronologically . . . #1) . . . USSR #2) . . . USA
The U.S. is the only country to have sent men to the moon, therefore they are the only country to have brought men back from it as well.
Only one country has ever sent people to the moon, or brought them back from there: the United States of America.
The former USSR was.
The USSR (Russia) was.
Russia (at the time the Soviet Union) was the first country to send a man into space. The man was cosmonaut Yuri Gagarin.
Solar particles
The first country was the USA with a spacecraft named mariner 2 and launched in 1962 to go to Venus.