Answer:
The answer is: They formed the Women's Peace Party
Explanation:
The American women demonstrated their opposition to<em> World War I </em>by forming the <em>Women's Peace Party (WPP).</em> This organization was established by Jane Addams,<em> an American social worker and activist.</em>
The members of this organization believed that "<em>women were the mother half of humanity"</em> and thus, they needed to do something to stop the war. They called for<em> arm control and its limitation,</em> <em>managing European conflict and striving to remove the causes of war (particularly, economic).</em>
Thus, this explains the answer.
<span>Fighting that involves opposing groups of citizens from the same country is called a Civil War</span>
