Answer:
Historians have identified several key causes, including: rats, trade networks such as the Silk Road, warfare such as the crusades, poor hygiene and a lack of medical understanding.
Explanation:
<span>The answers are:
A. Discrimination is treating people unequally because of prejudice or partiality.
<em> Discrimination is unequal treatment to people due to some reasons that can</em>
<em> be because of color, race or ethnicity.</em>
</span><span><span>B.The Thirteenth Amendment gave all male citizens the right to vote.
</span> <em>It gave the right to all males including African Americans.</em>
</span>
C. <span>Martin Luther King, Jr., gave his "I Have a Dream" speech at the Lincoln Memorial.
<em>It was a speech about freedom and equality</em></span>
The First World War had an enormous impact on US politics, culture, and society. Advocates of female suffrage successfully linked the patriotic efforts of women in the war with voting rights. This strategy was highly effective, and in 1920, the US Congress ratified the Nineteenth Amendment, which guaranteed women the right to vote.
Others were not so lucky. Hyper-vigilance on the home front led to spontaneous outbreaks of violence against groups whose loyalty to the United States was considered suspect. German-Americans, labor activists, suffragists, immigrants, African Americans, and socialists were subjected to threats, harassment, imprisonment, and physical violence.
At the same time, civil liberties were sharply curtailed. The Espionage Act of 1917 and the Sedition Act of 1918 criminalized the expression of antiwar sentiment and criticism of the US government and armed forces. Voluntary associations were created to identify dissidents, and many of these worked together with the Federal Bureau of Investigation to patrol the home front and punish perceived “enemies.
Womens rights,spontaneous outbreaks of violence ,espionage act of 1917
The Virginia Declaration of Rights I believe.
Answer:
The answer is B) 7.
Explanation:

The only thing you would have to do is divide each side by 4.

Next cross out like terms and divide where needed.

And there is your answer.
Good Luck. :)