Answer:
Fort Sumter in Charleston, South Carolina was one of the four forts that had not yet been captured by the Confederates, so Lincoln wanted to keep the fort at all costs in order to keep the Union's strenght in the South. He sent unarmed ships to supply the fort with military and food supplies. The Confederate President Jefferson Davis gave command to Southern forces led by General Beauregard to bomb the fort on April 12 to force it to surrender, which happened.
The Northern states all supported Lincoln. He called for the fortresses to be reclaimed and the Union to be preserved. At the same time, 75,000 volunteers were called up for a period of 90 days. In the previous months, several governors had trained their militias. Their troops started to move the next day.
The 1848 Treaty of Guadalupe Hidalgo, forced onto the remnant Mexican government, ended the war and specified its major consequence, the Mexican Cession of the northern territories of Alta California and Santa Fe de Nuevo México to the United States
The reason why a roman historian like Ammianus would want to compare the huns to "unthinking animals" is because many people saw these invaders as not being civilized, and thinking only of conquest and plundering.
Religious militancy exists in every type of religion. Almost always, those who practice this kind of radical militancy in the name of a particular religion represent only a small fraction of that religion's followers.