What did the thomas amendment do? a. it made slavery illegal in the rest of the louisiana territory, except for the territory of arkansas, and it allowed the maine–missouri bill to be passed in the house. b. it made slavery illegal in the rest of the louisiana territory, except for the territory of arkansas, and it allowed the maine–missouri bill to be passed in the senate. c. it made slavery illegal in the rest of the louisiana territory, except for the territory of arkansas, and it caused president monroe to veto the maine–missouri bill. d. it made slavery illegal in the rest of the louisiana territory, except for the territory of arkansas, and it caused the supreme court to declare the maine–missouri bill unconstitutional.