Why did Philip leave Jerusalem to go to samaria?

Philip left Jerusalem to go to Samaria primarily to spread the message of Christianity following the persecution of Christians that arose after the stoning of Stephen. This persecution led many believers to scatter, and Philip took the opportunity to evangelize in Samaria, where he preached the gospel, performed miracles, and baptized new converts. His mission was part of the broader effort to share the teachings of Jesus beyond Jerusalem, fulfilling the directive to spread the faith to all nations.