WORLD HISTORY

Detailed explanation-1: -Buddhism spread primarily through relocation diffusion by missionaries and was slow to diffuse outside the area of origin. By its definition, ethnic religions are found near the hearth but spread through relocation diffusion.

Detailed explanation-2: -Buddhist monks travelled with merchant caravans on the Silk Road to preach their new religion. The lucrative Chinese silk trade along this trade route began during the Han dynasty (206 BCE – 220 CE), with voyages by people like Zhang Qian establishing ties between China and the west.

Detailed explanation-3: -Buddhism was spread outside India through the efforts of missionaries, scholars, trade, emigration, and communication networks. Foreign monks who travelled along the silk route between India and China were responsible for the spread of Buddhism at sub-elite levels.