Select the four states from the list below where the principle of popular soverignty was proposed/used to determine an answer to the slave question. [mark all correct answers] a. kansas b. nebraska c. california d. maine e. missouri f. new mexico g. utah

The four states are A. Kansas, C. California, F. New Mexico, and G. Utah.
I know these are the four states of where popular soverignty was propsed/used to determine an answer to the slave question because when i learned about slavery, my teacher was saying Kansas, California, New Mexico, and Utah were the four areas were the slave question was answered.
Hope I helped! :P  

These islands/chinampas then provided rich soil for crops with easy access to water. i hope this is correct, im so sorry if its not !