They call it the World War because 1914-1918 was the first of a particular type of international conflict the world's first industrialised "total" war - which had been followed by a second industrialised world war of this kind - 1939-1945.
Answer:
july 16 1790
Explanation:
Founded on July 16, 1790, Washington, DC is unique among American cities because it was established by the Constitution of the United States to serve as the nation's capital.
The British colonized it the 18th & 19 Century