Donald Trump is the president of the USA. He signs a new law. He changes the name of a big lake. The lake was named Lake Ontario before. Now it is named Lake America. The lake lies at the border between the USA and Canada.
Trump says that the lake belongs to the USA. He says that the USA does not make good business with the province Ontario anymore. Therefore, the lake gets a name from the USA. Offices in the USA change all maps now. In Canada, the old name stays valid.
There is much dispute between the USA and Canada. The USA puts high taxes on goods from Canada. People call this Zölle. Canada also puts taxes on goods from the USA. Trump changed names before. He named the Gulf of Mexico simply the Gulf of America.