Has any country landed on mars

The United States and the Soviet Union are the only two countries to land a spacecraft on Mars

Explanation:

The first successful landing on Mars came on July 20, 1976, when NASA's Viking 1 lander touched down in Chryse Planitia (The Plains of Golf). Two spacecraft from the United Arab Emirates and China swung into orbit around Mars on successive days last week. ... Perseverance, the biggest, most advanced rover ever sent by NASA, became the ninth spacecraft since the 1970s to successfully land on Mars, every one of them from the U.S.

Explanation:

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was a long, primarily nonviolent series of events to bring full civil rights and equality under the law to all americans. the era has had a lasting impact on united states society, in its tactics, the increased social and legal acceptance of civil rights, and in its exposure of the prevalence and cost of racism. in the south violence and fraud in southern elections from 1868 to 1876, which had reduced black voter turnout and enabled southern white democrats to regain power in state legislatures across the south

it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.