Complex sentence: Physical buffers such as the railway line and roads were put into place seperate black ethnic groups, the white and coloured population.11 000 housing structures, of which approximately 6 000 were government built rental accommodation, were erected in Mangaung between 1952-1968.
Split into simpler sentences: Physical buffers such as the railway line and roads were put into place seperate black ethnic groups, the white and coloured population. Between 11 000 housing structures were erected in Mangaung of which approximately 6 000 were government built rental accommodation between 1952-1968.