In an era of globalization, the interconnectedness of financial markets means that monetary policy decisions in one country, particularly the United States, can have significant global repercussions. This interconnectedness necessitates a deeper understanding of how US monetary policy influences economic conditions worldwide. This paper reviews the impact of US monetary policy through various channels on advanced and emerging countries differently. The research finds that US monetary policy involves an element of uncertainty. In advanced countries, this uncertainty primarily influences the term premium component of yields, whereas in emerging countries, it affects the expected component of yields. Furthermore, the impact of US monetary policy shocks varies with the business cycle, having a larger effect when growth is weak outside the US. Different channels of spillover include interest rate differentials, exchange rate movements, capital flows, financial market reactions, and changes in risk perception and sentiment. For advanced countries, significant impacts are seen in interest rate spillovers, exchange rate dynamics, financial market volatility, and global trade and economic growth. In emerging countries, the effects are pronounced in exchange rate channels, capital flows, financial stability, term premium, risk perception, and local monetary conditions. Solutions include strengthening financial regulation, diversifying economic structures, building foreign exchange reserves, managing capital flows, improving monetary policy frameworks, fostering regional cooperation, promoting long-term investment, and enhancing data transparency.
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