Why was James the first chosen as king?

James I was chosen as king primarily because he was the closest legitimate heir to the English throne following the death of Elizabeth I in 1603. As the son of Mary, Queen of Scots, he had a strong claim through his descent from Henry VII, linking the Tudor and Stuart dynasties. His ascension was also seen as a means to unify England and Scotland, as he was already king of Scotland, which helped promote stability in both kingdoms. Additionally, there was a desire for a ruler who could bring peace after the tumultuous reigns of previous monarchs.