The correct answer is - b. 1993.
Even thought he European Union has its origins and basis from the 1950's and onward, it has been officially established as we know it nowadays in the year of 1993, in Maastricht, Netherlands.
It is a union of European countries, with the purpose of joint and supportive economies, open borders between the member states, political union, and also a fight against the nationalism on the continent and trying to make the multiple ethnic groups feel like Europeans (but hasn't seen any success whatsoever).
Answer:
Option: c. Sewer
Explanation:
Sewer plays a key role in collecting wastewater from human populations more effectively than in the past. Before, the emergence of cities, there was no proper procedure to collect the wastewater in America, which ultimately affected the environment and underground water. As cities began to take shape in America with a larger population, the sewage system came in the late 1850s in Chicago and Brooklyn.
Frank Sinatran, had "The Best is yet to come" etched onto his tombstone.
