For many years britain did not entorce britisn laws in the american colonies.
what is the name of that policy?

In American history, salutary neglect is the 17th and 18th century British Crown policy of avoiding strict enforcement of parliamentary laws meant to keep British colonies obedient to England.

representative government

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.