A second plan is ready if the first one fails
highlight the dependent clause

in the 1890s, southern states enacted a new form of black codes, called “jim crow” laws. these laws made it illegal for blacks and whites to share public facilities. this meant that blacks and whites had to use separate schools, hospitals, libraries, restaurants, hotels, bathrooms, and drinking fountains.

explanation:

gregor's attempts to crawl on the walls

"rodney quicklt turned away and darted into a crowed of student" i thinks thats it but idk