New Delhi, Feb. 13 -- The return of President Donald Trump to the White House has made tariffs a primary tool for addressing multiple issues that America faces, from illegal immigration and inflows of fentanyl and other drugs to its large trade deficit and need to increase government revenue. Nonetheless, America is not alone and countries like India, Bangladesh, South Korea, Kenya and Nigeria have high tariffs, with many developed countries using tariffs to protect sectors like agriculture.

While tariffs are often imposed to protect domestic industries, reduce trade deficits and raise government revenue, countries like South Korea have used them strategically to negotiate concessions in trade agreements. India employs tariffs to promote...