Why is disease an important theme in Global World chapter?

A. Disease also moved with global contacts

Step 1: Identify the concept: this is biological exchange. Step 2: Examples like smallpox and rinderpest show diseases also spread with connections. Step 3: Remember disease factor in global contacts.

Step 1: concept पहचानें: यह biological exchange है। Step 2: Smallpox और rinderpest जैसे examples दिखाते हैं कि diseases भी connections के साथ फैलीं। Step 3: Global contacts में disease factor याद रखें।