The Soviet Union did not enter the war until 1941. It formed an alliance with Great Britain. How was this alliance different than previous ones the Soviets had in World War II?

Ifound this on google “the existence of agglomeration economies is central to the explanation of how cities increase in size and population, which places the phenomenon on a larger scale. the concentration of economic activity in cities is one reason for their development and growth.” i hope this you for what your looking for.