Why is it significant that many jim crow laws reference gender as well as race?

The Jim Crow laws were designed to enforce discrimination and segregation in the south. Their purpose was to ensure that white Americans remain in control over the black population through economic and social dominance. As well as in control over women too. Unfortunately, men deemed women only slightly better than African Americans in terms of their social standing as they expected them to be subservient to men who were the heads of the households. 

he agrees with the monk's positions.