Witness of the age during Joshua’s conquering

As the conquering and victory of Joshua witness 2 historical event, firstly when his victory taking the Gilgal and provide circumcision for the one born in the desert, it was 1400 bc marked as the beginning of the Mycenaean era. 

Secondly when his victory over the Gibeonites (Amorites) ariund 1207bc , it stated the collapsing of the bronze. 

Around 1200bc it started the Iron Age, in China what happened is the Shang dynasty moved the capital from south part of yellow river to the northern part of yellow river Yin to witness the era of the Iron Age