An alliance begun in 1957 to improve economic and social conditions among its members, it has evolved into the 27-nation

European Union

On March 25, 1957, the six ECSC members signed the two Treaties of Rome that established the European Atomic Energy Community  which  was aimed at enabling cooperation in atomic energy development, research, and utilization as well as economic integration. This body evolved to the European Economic Community and then the European Union.

The correct answer is: "An alliance begun in 1957 to improve economic and social conditions among its members, it has evolved into the 28-nation European Union.

Explanation:

The European Union is a governmental entity that grouped 28 nations in the European continent. The following are some European Union's characteristics:

c. taught scientists many new things about the earth, but not other planets.

explanation:

the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.