the maps below show a plan of a city in 1950 and at the present

The maps illustrate the changes of layout of a country from 1950 to today.
It is clear that the city has been transformed from business district to residential area. In addition, the major road has been upgraded and there have been many new constructions designed over the period.
Looking at two diagrams, in 1950, the residential area was placed only in the middle of the city but now it has been expanded ten times higher in population. Similarly, the business district has been extended twice the size.
The lake has also been larger than the past and a new bridge on the east-south has been built. On the east-south, a Dam has been added near the airport. The airport has been rebuilt to give better services for residents. Finally, a new major road has been constructed from the west-south into the middle of the city.