Complex sentence: Additionally, the act outlawed marriage, fornication, and the intermarrying of white females with men of color; however the act permitted the continuation of marriages between white persons and persons of color that were contracted before the law was enacted.
Split into simpler sentences: Additionally, the act outlawed fornication, as well as the intermarrying of white females with men of color. However, the act permitted the continuation of marriages between white persons and persons of color that were established before the law was enacted.