1. Washington annexes the rest of Idaho, angering Utah and prompting a preemptive strike. 2. New York defeats New England, forcing them to cede a few territories and pay reparations. Although victorious, it leaves New England humiliated and enraged. 3. All neighbors of Texas invade Texas, forming the Central Coalition. It started with Oklahoma asking Mexico for help, leading to all neighbors (except Lousiana) invading Texas due to fear of Texas expansionism.