This document discusses different types of agriculture and major crops around the world. It begins by outlining factors that influence agriculture like climate, soil, and relief. It then describes various types of farming including subsistence, commercial, shifting cultivation, intensive subsistence, nomadic herding, extensive, plantation, mixed, pastoral, dairy, orchard, market gardening, horticulture, and pastoral farming. Specific crops and countries are provided for each type. Major crops discussed include rice, wheat, maize, millets, sugarcane, rubber, cotton, jute, tea, and coffee. Requirements for optimal growth of each crop are also summarized.