All of Indian society in the second half of the eighteenth century was, by order of the British administration, under a law divergent from Hindu law. There was a lot of change. The actual Hindu law that was used by the Hindus was quite different from the original Manu-smrti. The Manu-smrti is an example of the standard of brahminical culture. One cannot trace out from history when the Manu-smrti was written, but it is considered so perfect that it is the Hindu law. There is no need for the legislature to pass a new law daily to adjust social order. The law given by Manu is so perfect that it can be applicable for all time. It is stated in Sanskrit to be tri-kaladau, which means “good for the past, present, and future.” However, lot of changes have been made in the present Hindu law. Even late Pandita Jawaharlal Nehru introduced his own Hindu code. He introduced the right of divorce in marriage, but this was not in the Manu-samhita. Before this modern age the whole human society was governed by the Manu-smrti. Strictly speaking, modern Hindus are not strictly following the Hindu scriptures.
Source: A.C. Bhaktivedanta Swami Prabhupada (2014 edition), “The Science of Self-Realization”, Page 232