Which colony had a governor that was shared with Pennsylvania until the American Revolution?

The correct answer is Delaware. Delaware was originally part of the Pennsylvania colony and shared the same governor until the American Revolution. This arrangement stemmed from Delaware's early history, where it was composed of three counties that were originally part of Pennsylvania. When William Penn founded Pennsylvania, he also included the three lower counties (now Delaware) under his governance.

Delaware eventually sought greater autonomy due to its distinct economic interests and cultural differences. However, prior to the Revolution, it remained under the jurisdiction of Pennsylvania, both politically and administratively, which is why it is noted for sharing a governor with Pennsylvania during that period. Understanding Delaware's unique historical context helps clarify its governance structure compared to other colonies, which maintained more independent political identities.