Spanish Reconquest or just Reconquest is the name of a period of Chilean history that started in 1814 with the royalist victory at the Battle of Rancagua and ended in 1817 with the patriot victory at the Battle of Chacabuco. During this period, the defenders of the Spanish Empire reestablished their dominion in Chile after said country had separated itself from the Spanish Crown, installed its First National Government Board in 1810—the first institution of self-government in Chile, created its First National Congress in 1811 and subsequently elected its first supreme director, Francisco de la Lastra, in 1814.