sentences:  In 1857, the Illinois legislature changed the name of the village from Ridgeville to Evanston and it became an incorporated city in 1863.The university undertook a major development effort to drain the swamps, clear and grade the land, and donated or sold land to permit the construction of streets, parks, schools, waterworks, and churches.Between 1860 and 1870, Evanston's population had grown from 831 to 3,062.