Can someone help me with an essay, it has to be about politics

Contrast should only be used when a work is perfectly symmetrical. true or false

After selecting all bones, which command resets the bones to their default poses? alt + r shift + d alt + p u

How did brunelleschi solve his problem with the dome of the florence cathedral? a. he created an outer support shell. b. he created many layers of support within the dome. c. he created external supports for the dome. d. all of the above