A number of individual beats grouped together is called : C. Precinct
One of an example of a precinct is : Police precinct. In a police precinct , it's usually consist of a couple of police officers that beats and grouped together for a specific purposes
Nationalism would be the answer
Manifest Destiny is the belief that Americans had the right, or even the duty, to expand westward across the North American continent from the Atlantic Ocean to the Pacific Ocean. This would spread the glorious institutions of civilization and democracy to the barbaric Native Americans.