Why did disease become more decisive than guns in the conquest of America?

A. Native population में immunity नहीं थी / Native population had no immunity

Step 1: Identify the concept: this is biological conquest. Step 2: Diseases like smallpox badly weakened indigenous people because they had no immunity. Step 3: Remember smallpox factor in conquest of America.

Step 1: concept पहचानें: यह biological conquest है। Step 2: Smallpox जैसी diseases ने indigenous people को बहुत कमजोर किया क्योंकि उनमें immunity नहीं थी। Step 3: America conquest में smallpox factor याद रखें।