Which person was force to readopt the Ottoman constitution of 1876 ?
1876 : Ottoman constitution of 1876 , during the First Constitutional Era of the Ottoman Empire ( 1876–78 ) 1909 : Revisions to the 1876 constitution during the Second Constitutional Era of the Ottoman Empire ( 1908–20 ) 1921 : First constitution of the Republic of Turkey , 1921 1924 : Revised constitution of 1924 1961 : 1961 constitution ; introduced an upper chamber of legislation , the Senate , to form a bicameral system 1982 : 1982 constitution ; abolished the Senate , reverting to a unicameral system