How was humanism expressed in Renaissance art?

Explanation:

Combining scientific knowledge and mathematical study with the aesthetic principles of ideal proportion and beauty, the drawing exemplified Renaissance Humanism, seeing the individual as the center of the natural world, linking the earthly realm, symbolized by the square, to the divine circle, symbolizing oneness.

abraham lincoln, according to anyone who was connected with agriculture, represented the worst of northern politicians. shortly after lincoln was elected, south carolina seceded from the union. they along with other southern states, retained their anger. in a way, it was their own fault: the democrats were split in the south. some wanted slavery to be extended in other states that were about to join the union and some didn't want it badly enough. lincoln had a solid backing from his party: the republicans were united in not wanting slavery to be expanded.