 In 1824, the Monroe administration would further bolster U.S. claims to Oregon by reaching the Russo-American Treaty of 1824, which set the southern border of Russian Alaska at the parallel 54°40′ north.As the Spanish Empire continued to fracture during Monroe's second term, Adams and Monroe became increasingly concerned that the "Holy Alliance" of Prussia, Austria, and Russia would seek to bring Spain's erstwhile colonies under their control.In 1822, following the conclusion of the Adams–Onís Treaty, the Monroe administration recognized the independence of several Latin American countries, including Argentina and Mexico.