Name the independent variable of the data given​

where's the data located..

in "letter from a birmingham jail," king argues that there are four basic steps in any nonviolent campaign: "[c]ollection of the facts to determine whether injustices exist; negotiation; self purification; and direct action." finally, direct action is taken and acts such as boycotts and sit-ins are staged.

why biographies are better than plays

explanation someone is saying they like biographies better