Answer:
Both the commercial routes and the borders of the Islamic world, crossed the limits of their territories, reaching to spread throughout the world, even becoming undefined.
Explanation:
Trade routes were a type of "path" that linked different regions around the world organizing trade between different cultures. The borders of the Islamic world, represents the geographical limitation in which Islam has established itself.
Both the trade routes and the borders of the Islamic world have developed and spread in a very powerful way, reaching beyond their own limits and becoming indefinite, since they began to cover larger and larger regions, spreading to basically the whole world.
