Why was the strategy used by sargon successful

Sargon was a strong king with smart political strategies. He destroyed city walls and appointed loyal governors of the city states. he was the 1st king to demand his sons' rule after his death. Sargon was also a skilled general with powerful military strategies, he  assembled a large army and taught them to fight in tight formations. Some soldiers would be carrying shields in the front while others in the back carried spears

Explanation:

answer; i want to hold your hand;