$BTC U.S. Treasury bonds have an important position in the international financial market and are a significant investment target for many global investors. Changes in their interest rate affect capital flows worldwide; when the yield on U.S. Treasury bonds increases, capital tends to flow into the U.S., which can lead to capital outflows from other countries and fluctuations in exchange rates, among other effects. Additionally, changes in the credit rating of U.S. Treasury bonds can also cause fluctuations in global financial markets.