Complex sentence: After Indiana was granted statehood, Jennings was elected over Posey to serve as the first Governor of Indiana where he appointed the first Indiana Supreme Court and played an integral role establishing the state government.
Split into simpler sentences: After Indiana was granted statehood, Jennings was elected over Posey to serve as the first Governor of Indiana. As governor he appointed the first Indiana Supreme Court and played an important role in establishing the foundation of the state government.