Final answer:
During British colonial rule in India, crops such as cotton, tea, and opium became important to the British Empire. Indian farmers were forced to grow these cash crops to support British factories and trade with China.
Step-by-step explanation:
During the period of British colonial rule in India, several agricultural crops became important to the British Empire. These crops included cotton, tea, and opium. Indian farmers were forced to grow cash crops like cotton and tea to supply raw materials for British factories. Opium was also produced in India and sold by the British in China. These crops played a significant role in sustaining the British Empire's economy and trade.