One Earth Plus

The Alien who is interested in the Earth one day see the future Earth explode due to a continuing war, which causes the cosmic planets to collide. In order to prevent the destruction of the Earth, he came to Earth a long time ago and began to find a way to enter the body of Earthlings. The Olympics were held to prevent war on Earth, and despite hosting the Olympics, the battlefield was not over. We kept thinking. While thinking of a way to prevent war on Earth, he saw a currency war between the United States and China and knew that this would start a war. We come to the conclusion that there should be a single currency on Earth.