Your answer is wrong and I have no idea why your talking about feminism. But anyway the affect of surprise was that the natives Americans enemy wouldn't have time to prepare so the losses/casualties for the enemy would be heavy,also using the element of surprise would also most likely scare enemy soldiers, and they would be distracted and confused as well.
Education reform lead by Horace Mann was a major reform movement in the early 1800's. He helped create mandatory public education for all in the United States.
He became a leader in the abolitionist movement, which sought to end the practice of slavery, before and during the Civil War. After that conflict and the Emancipation Proclamation of 1862, he continued to push for equality and human rights until his death in 1895.
The answer is Africa, or in your case, South Africa.