Given the question: Information: - Paraguay, officially the Republic of Paraguay, is a landlocked country in central South America, bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Paraguay lies on both banks of the Paraguay River, which runs through the center of the country from north to south. Due to its central location in South America, it is sometimes referred to as "Corazon de Sudamerica" ("Heart of South America"). Paraguay is one of the two landlocked countries (the other is Bolivia) that lie outside Afro-Eurasia. Paraguay is the smallest landlocked country in the Americas. - Swordsmanship or Swordfighting refers to the skills of a "swordsman", a person versed in the art of the sword. The term is modern, and as such was mainly used to refer to smallsword fencing, but by extension it can also be applied to any martial art involving the use of a sword. The formation of the English word "swordsman" is parallel to the Latin word "gladiator", a term for the professional fighters who fought against each other and a variety of other foes for the entertainment of spectators in the Roman Empire. The word "gladiator" itself comes from the Latin word "gladius", meaning "sword". - The Paraguayan War, also known as the War of the Triple Alliance and the Great War in Paraguay, was a South American war fought from 1864 to 1870 between Paraguay and the Triple Alliance of Argentina, the Empire of Brazil, and Uruguay. With an estimated 400,000 deaths, the war was the deadliest and bloodiest in Latin America's history. It particularly devastated Paraguay, which suffered catastrophic losses in population - almost 70% of its adult male population died, according to some counts - and was forced to cede territory to Argentina and Brazil. According to some estimates, Paraguay's pre-war population of 525,000 was reduced to 221,000, of which only 28,000 were men. - Cisplatina Province or Cisplatine Province was a Brazilian province in existence from 1821 to 1828 created by the Luso-Brazilian annexation of the Oriental Province. From 1815 until 1822 Brazil was part of the United Kingdom of Portugal, Brazil and the Algarves. After the independence of Brazil and the formation of the Empire of Brazil the Cisplatine Province remained part of it. In 1828, following the Treaty of Montevideo, the Cisplatine Province became independent as Uruguay. - South America is a continent located in the western hemisphere, mostly in the southern hemisphere, with a relatively small portion in the northern hemisphere. It is also considered a subcontinent of the Americas, which is the model used in nations that speak Romance languages. The reference to South America instead of other regions (like Latin America or the Southern Cone) has increased in the last decades due to changing geopolitical dynamics (in particular, the rise of Brazil). - Uruguay, officially the Oriental Republic of Uruguay, is a country in the southeastern region of South America. It borders Argentina to its west and Brazil to its north and east, with the Rio de la Plata (River of Silver) to the south and with the Atlantic Ocean to the southeast. Uruguay is home to an estimated 3.42 million people, of whom 1.8 million live in the metropolitan area of its capital and largest city, Montevideo. With an area of approximately , Uruguay is geographically the second-smallest nation in South America, only larger in size than Suriname. - The Empire of Brazil was a 19th-century state that broadly comprised the territories which form modern Brazil and Uruguay. Its government was a representative parliamentary constitutional monarchy under the rule of Emperors Dom PedroI and his son Dom PedroII. A colony of the Kingdom of Portugal, Brazil became the seat of the Portuguese colonial Empire in 1808, when the Portuguese Prince regent, later King Dom JoaoVI, fled from Napoleon's invasion of Portugal and established himself and his government in the Brazilian city of Rio de Janeiro. JoaoVI later returned to Portugal, leaving his eldest son and heir, Pedro, to rule the Kingdom of Brazil as regent. On 7 September 1822, Pedro declared the independence of Brazil and, after waging a successful war against his father's kingdom, was acclaimed on 12 October as PedroI, the first Emperor of Brazil. The new country was huge but sparsely populated and ethnically diverse. - Luis Alves de Lima e Silva, Duke of Caxias (25 August 1803 7 May 1880), nicknamed "the Peacemaker" and "Iron Duke", was an army officer, politician and monarchist of the Empire of Brazil. Like his father and uncles, Caxias pursued a military career. In 1823 he fought as a young officer in the Brazilian War for Independence against Portugal, then spent three years in Brazil's southernmost province, Cisplatina, as the government unsuccessfully resisted that province's secession in the Cisplatine War. Though his own father and uncles renounced Emperor Dom PedroI during the protests of 1831, Caxias remained loyal. PedroI abdicated in favor of his young son Dom PedroII, whom Caxias instructed in swordsmanship and horsemanship and eventually befriended. - The Cisplatine War, commonly known as the Argentine-Brazilian War, was an armed conflict over an area known as Banda Oriental or the ""Eastern Strip"" (roughly present-day Uruguay) in the 1820s between the United Provinces of the Rio de la Plata and the Empire of Brazil in the aftermath of the United Provinces' emancipation from Spain. - The Pikysyry maneuver was a tactic used by Brazilian marshal Luis Alves de Lima e Silva , Duke of Caxias , during the Paraguayan War to outflank the Paraguayan southern defense line along the stream of Pikysyry consisting of 142 gun platforms along a line 9.1 km long , built by the British engineer Lt. Col. George Thompson . Just to the north were the batteries of Angostura , protecting the River Paraguay . Marshal Caxias decided to attack from the Paraguayan rear by constructing a 10.7 km road on the Chaco side of the river starting at Santa Theresa . - Argentina, officially the Argentine Republic, is a federal republic in the southern half of South America. Sharing the bulk of the Southern Cone with its neighbor Chile to the west, the country is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. With a mainland area of , Argentina is the eighth-largest country in the world, the second largest in Latin America, and the largest Spanish-speaking one. The country is subdivided into twenty-three provinces (singular "provincia") and one autonomous city ("ciudad autonoma"), Buenos Aires, which is the federal capital of the nation as decided by Congress. The provinces and the capital have their own constitutions, but exist under a federal system. After reading the paragraphs above, we are interested in knowing the entity with which 'pikysyry maneuver' exhibits the relationship of 'part of'. Find the answer from the choices below. Choices: - 25 - art - center - city - congress - country - day - dynamics - empire - english - eurasia - existence - fencing - government - may - monarchy - ocean - october - part - person - portuguese - river - romance languages - september - silver - southern cone - the americas - the republic - treaty - war - war of the triple alliance
The answer is:
war of the triple alliance