Global stocks fall sharply and the US dollar hits a six-month low after Trump unveils tariffs on trade partners.European markets, including FTSE 100, Germany's Dax, and France's CAC, open lower.Asian markets, including Japan's Nikkei, Hong Kong's Hang Seng, and Vietnam's stock market, experience major sell-offs.Investors turn to safe assets like gold, while oil prices fall and concerns of a global recession rise.