The impact on the attack on Fort Sumter was that it is said to have been the first battle of the Civil War or the start of the Civil war as the Confederate Canons shot Fort Sumter.
Hope I was much help.
I believe the answer is: Brief Example.
Brief example refers to a short statement that aimed to support relevancy of the speakers' main point.
In public speaking, brief example shall not be longer that five minute and is aimed to hooked audience attention to the main topic.<span />
The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent.
I'm pretty sure the answer is fingerprint scanning.
