Complex sentence: During this period, he signed several laws that advanced the rights and opportunities for black residents, as well as guaranteeing fugitive slaves jury trials in the state, protecting abolitionists, and using his position to intervene in cases of free blacks enslaved in the South.
Split into simpler sentences: During this period, he signed several laws that advanced the rights and opportunities for black residents, as well as guaranteeing fugitive slaves jury trials in the state. The legislation protected abolitionists, and he used his position to intervene in cases of freed black people who were enslaved in the South.