Why is if significant that many Jim Crow laws reference gender as well as race?

What is better pilgrim or mongoose? When Alaska was first purchased what was the nickname? How many roman emperors were black? In 1689 what did king William and queen Mary? How many movies on the 3 musketeers? What plants do the yanomami tribe use? Who supported the prosecution john scopes? Did all men go to war? What was made for face the mummy bodies? When did Robert E. Clary die? How did Francisco Pizarro help bring about the end of the Incan civilization? What was the first European city to be liberated from Germany? What is an example of a number that was tattooed onto a Jewish persons arm during the Holocaust? For what was Alexander Ypsilanti best known? What reference book contains a complete list o synonyms and antonyms? How much does a lineman make a year? Who was the winner of the last olympic games? Was Jesus a black man? Who is Amon-Re Isis and Horus were what? What is the tone of the writing for civil disobedience?

Why is if significant that many Jim Crow laws reference gender as well as race?