Due to perceptual filters, people exposed to the same information will often disagree about what they saw or heard.
a. true
b. false

c. taught scientists many new things about the earth, but not other planets.

explanation:

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.