Answer:
B. Unions are harmful because they encourage violence
Explanation:
The poster shows groups of workers that look as if they are causing destruction and violence. With the figure on the right, it seems they are the ones to put out this violence, so you can say this poster is going against the creation of Unions.
Brown v. Board of Education was a landmark case in which it was finally proven that segregation in institutions of education was highly unconstitutional, so you could say that that is the greatest effect since it made other schools become open for everyone as well.
Answer:
Lincoln's inaugural address was stirring. He appealed for the preservation of the Union. To retain his support in the North without further alienating the South, he called for compromise. He promised he would not initiate force to maintain the Union or interfere with slavery in the states in which it already existed.