IDNLearn.com provides a collaborative environment for finding and sharing answers. Join our Q&A platform to get accurate and thorough answers to all your pressing questions.

Around the 14th century, why were the cities of
Nanjing, Calicut, Mogadishu, and Venice
significant?
(1) Major centers of trading activity flourished
there.
(2) The first democracies emerged there.
(3) Islamic religious centers developed there.
(4) The Portuguese established colonies there.