Answer:
D: They impeached Johnson, but they were unable to remove him from office
Secondary source is documents written after an event has occurred. providing secondhands accounts of that event
Benefits:
There are several benefits of growing up in a Western Democratic Society. For one, you have the right to freedom of speech and express your views.
You can express these views through speeches, books, columns but most importantly, you can express your views by directly voting for a person.
The right to vote gives you the power to select your own leaders and a say in how the government has to run.
Most Western liberal democracies also provide freedom of religion.
Downsides:
However, this system does have some draw backs. A Democratic system means that the country will be ruled by 'majority' beliefs. This means, your thoughts as an individual are not as important as those of a majority of people. These might be at odds with your beliefs and if you are a minority, things can get tough.
It is also tough to get things done, as democratic institutions require certain procedure that take time.
Also, corrupt officials can easily swing votes in their favor by using money and propaganda.
A is the answer. The first Bull Run was early in the war, and much of the North was convinced it would end quickly-people had even brought out chairs to watch the firefight. However, their visions were soon shattered.
B is wrong: the South had plenty of troops, and even if it did not, Bull Run was no indication.
C is wrong: Bull Run was a failure for the North, so it would not indicate to Lincoln that the North was overstocked on troops.
Similarly, D is wrong: the war actually would take longer.
The issue that led to racial violence is Population Migration.