As the world reels from US President Donald Trump's tariffs onslaught, here is a look back at some major trade wars since the 19th century: - 19th century Opium ... raised tariffs on pasta imports ...

In the mid-19th century ... Trade Organization (WTO), which ruled in their favour, the United States and Canada, the countries most affected, imposed 100-percent tariffs in 1999 on a range of ...

here is a look back at some major trade wars since the 19th century: – 19th century Opium Wars – In the mid-19th century, two conflicts over the opium trade, which became known as the Opium ...