What were the two main reasons the zhou conquered the Shang

1. The corrupt and tyrannical rule of Emperor Zhou (Zhou Wang), the last emperor of Shang, made people unsatisfied. Then his people decided to rise up to overthrow the his throne!
2. Zhou Wang didn't attach importance to his court ministers. Without the support of the wise, Shang couldn't operate well. Instead, Zhou used more of the talents to win great support!