In the past, the meaning of marriage has been an agreement between two people to live together and have children in a legitimate manner. The marriage was not just to form a couple; it was also to merge two families together. From the early 1900s until today the allegation of marriage and its influence got a significant change compared to early societies which have aroused my interest to perform this into a research paper. My study is focused on marriage and social changes during the 1900s. Thoughts that arise now is that why there was a remarkable change in the marriage rate during the 1900s and whether there were any social changes had to do something with it. The investigation is based primarily on the statistical calculation that shows that the marriage rate during the 1900s got a remarkable change and behind this change lies among others the provision of welfare state and women's emancipation. The paper analyzes the changes that occurred during the 1900s marriage rates and the social changes that occurred at the same period and are associated with the changing of family patterns during the 1900s.