I suspect those nations are Russia, South Korea, North Korea, Turkiye, Japan, China mainly Shanghai Hong Kong and Blue Turkey, Europe, India, The Muslim Nations, Cargill, Amazon, all of Africa except Roanoke, All of South America,, the Espejo continent, the Zealandia Continent, Republic of Vyond, Central Korea, Neonia, Kyrobite and countries from other planets, including Venus Soviet Union, Venus Europe, Venus Japan, Venus China, The Andromeda planet countries, Aliens, Robots and Abyss Theocracy of Poland...
All of these nation are rising and one day, they will challenge the United States of America, but at the end times, only 4 nations will have the most influence, two of them bigger than the other two.
The United States of America, The Papacy, Bedrockium and Siberia will have the most influence in the world, no matter how hard the other nations try to match these four, these four will still end up beating the other nations.
When you say you are the best country in the universe, you are too darn overconfident, The United States will come up and destroy you. so, say you are the 5th best country in the world and you will be fine.
When you say you are the strongest country, stronger than the United States, you are being too darn overconfident.
When you say you are richer than the United States, in terms of GDP Nominal, you are being too darn overconfident.
When you say you can beat the United States without a fight, you are being too damn overconfident. The United States will fight and they will beat you.