A land with different territories under a single rule is an empire.
311 million
In 1776, the next largest cities were New York City (25,000 people), Boston (15,000), Charleston (12,000), and Newport (11,000). All are rough estimates as the U.S. Census enumeration did not begin until the 1790. Today, in 2012, the U.S. population has blossomed to 311 million.
Source: http://economistsoutlook.blogs.realtor.org/2012/07/03/largest-cities-in-the-united-states-in-1776-and-in-2076/
A. place limits on an English ruler’s power
Answer:
Approximately 78%
Explanation: the atmosphere is made up of nitrogen gas (N2