How does propaganda influence public opinion during political campaigns or initiatives?

Explanation:

is the more or less systematic effort to manipulate other people’s beliefs, attitudes, or actions by means of symbols (words, gestures, banners, monuments, music, clothing, insignia, hairstyles, designs on coins and postage stamps, and so forth). Deliberateness and a relatively heavy emphasis on manipulation distinguish propaganda from casual conversation or the free and easy exchange of ideas. Propagandists have a specified goal or set of goals. To achieve these, they deliberately select facts, arguments, and displays of symbols and present them in ways they think will have the most effect. To maximize effect, they may omit or distort pertinent facts or simply lie, and they may try to divert the attention of the reactors (the people they are trying to sway) from everything but their own propaganda.

the emancipation proclamation was the aim of the war change to include the freeing of slaves in addition to preserving the union. the 13th amendment, which abolished slavery in the u.s. was passed on december 6th 1865.

as promised, lincoln waited to unveil the proclamation until he could do so with success from the union military advance. on september 22nd 1862, after a victory at antietam, he publicly announced a preliminary emancipation proclamation, declaring all slaves free in the rebellious states as of january 1st 1863.