Editing History of Uruguay (section)

===Foreign relations===
The government of Montevideo rewarded Brazil's financial and military support by signing five treaties in 1851 that provided for a perpetual alliance between the two countries. Montevideo confirmed Brazil's right to intervene in Uruguay's internal affairs. Uruguay also renounced its territorial claims north of the [[Río Cuareim]], thereby reducing its area to about {{convert|176000|km2|sqmi|sp=us}} and recognized Brazil's exclusive right of navigation in the [[Laguna Merin]] and the [[Rio Yaguaron]], the natural border between the countries.<ref>Handelmann, Heinrich, and Lucia Furquim Lahmeyer. Historia do Brasil / por Henrique Handelmann [traducção brasileira feita pelo Instituto historico e geographico brasileiro]. Translated by Lucia Furquim Lahmeyer. Rio de Janeiro: Imprensa nacional, 1931.</ref>

In accordance with the 1851 treaties, Brazil intervened militarily in Uruguay as often as it deemed necessary.<ref name="loc-7">{{cite web |url=http://countrystudies.us/uruguay/7.htm |title=The Struggle for Survival, 1852–1875 (Chapter 7) |work=Uruguay: A Country Study |editor1=Rex A. Hudson |editor2=Sandra W. Meditz |year=1990 |publisher=Library of Congress Country Studies |location=Washington DC |access-date=23 February 2011}}</ref> In 1865, the [[Treaty of the Triple Alliance]] was signed by the [[Emperor of Brazil]], the [[President of Argentina]], and the Colorado general [[Venancio Flores]], the Uruguayan head of government whom they had both helped to gain power. The Triple Alliance was created to wage a war against the Paraguayan leader [[Francisco Solano López]].<ref name="loc-7" /> The resulting [[Paraguayan War]] ended with the invasion of Paraguay and its defeat by the armies of the three countries. Montevideo, which was used as a supply station by the Brazilian navy, experienced a period of prosperity and relative calm during this war.<ref name="loc-7" />