the place where something started
a cradle of civilization
the cradle of something formal the place where something important began:
Athens is often regarded as the cradle of democracy.
usually singular ~ of sth the place where sth important began
• Greece, the cradle of Western civilization
Cambridge Advanced Learner's Dictionary - 4th Edition
the cradle of sth literary
the place where something started:
Fossil records indicate that Africa was the cradle of early human evolution.
the cradle of civilization
© Cambridge University Press 2013
4) N-COUNT: usu sing, the N of n A place that is referred to as the cradle of something is the place where it began.
Mali is the cradle of some of Africa's richest civilizations.
...New York, the cradle of capitalism.
2 formal : the place where something begins - usually singular; usually + of
• the cradle of civilization/liberty