Why were new lands cleared in the nineteenth century?

A. Food production बढ़ाने के लिए / To increase food production

Step 1: Identify the concept: this is global agricultural expansion. Step 2: Lands in areas like America and Australia were cleared to meet Europe's food demand. Step 3: Remember new lands with food supply.

Step 1: concept पहचानें: यह global agricultural expansion है। Step 2: Europe की food demand पूरी करने के लिए America और Australia जैसे areas में land cleared हुई। Step 3: New lands को food supply से याद रखें।