In 1854, the Constitution was amended to change the name of the Conservative Senate Council. Later, in December of the same year, a new revision to the Constitution was made to merge the two chambers in a Consultant Senate, being the first period in the history of the Dominican Republic in which the Legislature was governed by a unicameral Congress. The bicameral system was again replaced in November 1865 after the Restoration of the Republic, separating the Congress in a House of Representatives and House of Representatives.