Complex sentence: In the 19th century, every justice was a male of European descent, almost always Protestant and of Northern European descent, and concerns about diversity focused on geography, to represent all regions of the country, rather than ethnic, religious, or gender diversity.
Split into simpler sentences: In the 19th century, every justice was a male of European descent (usually Northern European), and almost always Protestant. Concerns about diversity focused on geography, to represent all regions of the country, rather than religious, ethnic, or gender diversity.