After world war i, the main reason britain and france did not support president wilson’s peace plan was that they

Wanted to punish Germany.

Wilson's plan for peace included a fair response to Germany which Britain and France could not allow. They were angry and bitter after a long war which destroyed their lands. They wanted Germany punished for their actions in the war. Wilson wanted to create a democracy in Germany but also allow them to maintain a military and not have to pay heavy reparations. Wilson was not listen to and eventually left the treaty negotiations early. 

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.