What purpose does a key have on a map a to show direction

b to explain symbols, colors, and lines

c to reveal what area the map will cover

d to tell how a measured space corresponds to actual distance
pls hurry

B - To explain symbols, colors, and lines.

earlier philosophers whose work influenced the enlightenment included bacon, descartes, locke, and spinoza. the major figures of the enlightenment included beccaria, diderot, hume, kant, montesquieu, rousseau, adam smith, and voltaire. it spread the ideas of the enlightenment across europe and beyond.

united states government;