Who was a worker and a powerful leader in corinthian and ephesian churches

Paul of Tarsis is the correct answer.

Paul of Tarsis, also known as Saul of Tarsis, was a preacher and powerful leader who preached the gospel of Jesus Christ to the first-century world. In the journey of spreading the gospel, Paul (along with Priscilla and Aquila) was the one in charge of a mission that was paramount for building up the churches of Corinth and Ephesus. Even though Paul was a great Apostle, Apollos was a powerful leader in Corinthian and Ephesian churches. He traveled to Ephesus where he preached in the synagogues (Acts 18.24) and   also to Corinthian where he had the chance to "water" what Paul had "sown" (Acts 19.1).  

2. a land bridge connected asia and north america thousands of years ago.

4. crossing the land bridge would have been simple for the first migrants.

5. people might have crossed a land bridge while hunting animals.

the china one is last

explanation: