Asia-Pacific markets plunged after U.S. President Donald Trump imposed hefty reciprocal tariffs on over 180 countries and territories in the region.Japan's Nikkei 225 dropped 2.8% while Hong Kong's Hang Seng index fell 1.5%.Charts shared by the White House showed the effective tariff rates imposed on American goods by other countries.China, South Korea, and Australia face higher tariffs on various goods.