The United States leads the world as the strongest economy, with a GDP exceeding $27 trillion. Its success is due to its technological innovation, robust financial market, and ability to attract global investment. China ranks second, with a GDP close to $20 trillion, standing out for its investment in infrastructure and digitalization.
China and the US are really competing tightly in terms of economy and technology even though these two countries are always in conflict, China cannot escape dependence on the US, this is proven by the news that China wants to invite the US to sit down to discuss the increase in tariffs set by Donald Trump.
and if we discuss other countries that have strong economies and technology, Japan is ranked 3rd, I am not surprised because Japan has contributed a lot to the world for their technology (source google)