describe how you could determine the population size of a specific type of plant in a large forest without counting all of the plants

Balkan nationalism increased tensions between austria and russia

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it