What was the main reason for the conflict between china and britain?

The Opium Wars were two wars in the mid-19th century involving Anglo-Chinese disputes over British trade in China and China's sovereignty. The disputes included the First Opium War and the Second Opium War.

Vasco da Gama was best known for being the first to sail from Europe to India by rounding Africa's Cape of Good Hope. Over the course of two voyages, beginning in 1497 and 1502, da Gama landed and traded in locales along the coast of southern Africa before reaching India on May 20, 1498.☺️.