What were the greatest problems with building
a city on the site of calcutta?

i belive the classic sword and a shield would do

what the question i might be able to

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.

it made them more prductive and efficent but with the change of polcies less and les got into the navy