Juan Bautista Alberdi, Argentinian theorist and diplomat (d. 1884)
Juan Bautista Alberdi (August 29, 1810 – June 19, 1884) was an Argentine political theorist and diplomat. Although he lived most of his life in exile in Montevideo, Uruguay and in Chile, he influenced the content of the Constitution of Argentina of 1853.

Based on his liberal and federal constitutional ideas, Alberdi at the same time tried to satisfy contrary social interests and establish a balance between national political centralization and provincial administrative decentralization: considering that both solutions would contribute to the consolidation and development of the original being of the single nation.