How did the passage of the kansas-nebraska act contribute to the later outbreak of the civil war?

Ineed to try to get this right so i can get a good grade so can someone me

Mississippi, florida, alabama, georgia, louisiana, and texas all seceded from the union. true or false ?

Which of the following problems did shays rebellion show about the articles of confederation? a. there was no federal standing army b. states couldn’t create their own tax laws c. the federal government imposed too many taxes on states d. there was too much federal regulation of interstate commerce