Which of the following best describes the united states?

a)it has a market economy with no government regulation. this is the only system that can work with a government run by the people.
b)it has a command economy. a large nation like the united states needs the government to control all growth of business to prevent problems.
c)it has a traditional economy. most communities are focused on providing their own needs with the resources available in the local area.
d)it has a mixed economy. the government protects individual rights, such as minimum pay for work and choices in goods and services.

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

the circumstances that justified roosevelt´s faith in george curry´s honesty, courage and loyalty were that he served under roosevelt´s rough riders during the spanish-american war and fought in the philippines.   in 1904 theodore roosevelt asked curry to accept an appointment as governor of isabela province (philippines); afterwards served in samar province(philippines) and upon returning to the united states he baecame governor of new mexico territory.