Final answer:
Tobias left Georgia in 1743 after failing to respond to the Trustees' request for a recommendation for a president in Frederica.
Step-by-step explanation:
Tobias left Georgia in 1743 after he failed to respond to the Trustees' request to recommend a president for the county of Frederica. This led to the Trustees appointing William Stephens as president of the entire colony. Tobias' departure from Georgia was prompted by his lack of correspondence and decision-making without consulting the Trustee board.