Answer:
Just like the Kaiser and his forces during the Great War, Nazi Germany greatly underestimated the fighting capacity of the United States.
Here are the answers to the given questions above.
1. John O'Sullivan suggests that Americans should be able to possess by right of Manifest Destiny is <span>to overspread and to acquire the entirety of the continent which the Almighty has provided them for the development of the great experiment of liberty and the democratic government invested to them.
2. The reason he gives is that it is f</span><span>or the full expansion of its principle and destiny of growth.
Hope this answer helps.</span>
Well in the case of the Mongols for example, being nomadic meant that their armies were highly mobile and adaptable. Conquests and long distance travel to conquer a civilization wasn't as difficult because it suited their nomadic lifestyle. They often adapted certain military technologies from the civilizations they conquered as well.
B. The Texas revolution ended