Describe how there was a diffusion of crops along trade routes in afro-eurasia

Improved commercial practices led to an increased volume of trade and expanded the geographical range of existing trade routes—including the Silk Roads, trans-Saharan trade network, and Indian Ocean—promoting the growth of powerful new trading cities

Explanation:

a. factors that are used to make goods and services

it maybe, we dont know. however lucky the lipercon seams guilty