For 10 points, name this nation which dictator Francisco Solano López drove to disastrous defeat in the War of the Triple Alliance.
A 1921 law in this nation allowed disputed territory to be colonized by Mennonites, who founded the city of Filadelfia. This nation lost a naval battle at Riachuelo, but a year later, won despite heavy losses at Curupayty. In another war, forces from this nation routed an army in the Campo Vía pocket led by German World War I veteran Hans von Kundt. One general from this nation, José Estigarribia, successfully besieged Fortín Boquerón and, later, Ballivián. Earlier, its army was decimated by the Campaign of Lomas Valentinas. This nation defeated Bolivia in the Chaco War but lost to forces led first by Bartolomé Mitre and later by the Duke of Caxias. In that war, this nation's opponents were Argentina, Brazil, and Uruguay. For 10 points, name this nation which dictator Francisco Solano López drove to disastrous defeat in the War of the Triple Alliance.
A 1921 law in this nation allowed disputed territory to be colonized by Mennonites, who founded the city of Filadelfia.
Republic of Paraguay [or República del Paraguay, or Tetä Paraguáype]