I'm NOT 100% sure about this answer but I think it's the Lines of Longitude
Answer:
Kilimanjaro, the highest peak of Africa, is snow-capped though it lies close to the equator. What are the reasons? This due to its High Altitude. One must keep in mind that as altitude increases, temperature decreases.
Jose San Martin was an argentine general and the prime leader of the southern part of south America. hoped that helped!
The answer is 2. <span>The fact that mechanized agriculture has replaced manual labor. Hope this helps :)</span>