Answer:
America was Britain's enemy in the French and Indian War, but they were allies in the American Revolutionary War.
The idea that O'Sullivan describes in this quotation is A) manifest destiny. Manifest Destiny was an idea that O'Sullivan was responsible for popularizing in the 1800s. This political theory or ideology sought for the United States to expand its borders to the Pacific Coast based upon a god given right to expansion which he called Manifest Destiny.
On February 16, 1861, in San Antonio, Texas General David E. Twiggs surrendered all federal holdings to a huge army of rebels. All military posts were vacated and all properties were seized by the secessionists. As a condition for the surrender, General Twiggs and his troops were allowed to leave with their horses and arms.
Conduct your lincoln memorial in a great impressive way thank you no thank you