Integrate assignments 2 and 3.

Your program must accept the names of two places in the U.S.
from the user. It must then use your hash table to look up
those names, and interact with the user if necessary to
resolve names that appear in more than one state.

Then your solution to assignment three should display the
map, showing those two places, labelled with their names.

You should have already done the substantial work for this.
Use this as an opportunity to tidy it up. Keep the hash table
and map drawer as two independent modules.