Explain why many people call the european union (eu) the “ united states of europe”?

It doesn't mean 'The United States', as in USA or America. It means The United 'States' of Europe. The Union is made up of a number of countries or states all united for a common purpose.

“destroyers for bases agreement in the destroyers for bases agreement between the united states and the united kingdom on september 2, 1940, fifty caldwell , wickes, and clemson class us navy destroyers were transferred to the toyalbnavy from the united states navy in exchange for land rights on british possessions.” i hope this you .