By the time of the Renaissance, European powers started to take over other countries in Asia. During this time the opium epidemic was growing in China. Foreign traders (primarily British) had been illegally exporting opium mainly from India to China since the 18th century, but that trade grew dramatically from about 1820. The resulting widespread addiction in China was causing serious social and economic disruption there. This led to what is now known as the first opium war. The first Opium War between China and Great Britain lasted from 1839 to 1842. The conflict was the result of years of attempts by the British to exploit China as a market for British goods. Britain eventually relied on its superior military capabilities to force open the lucrative Chinese market, while imposing an illicit trade in opium on the Chinese people.