Task: Text Categorization
Input (English): One result of this war was a revolution led by the MNR Party, and it ended with a mediation led by Carlos Lamas. This war saw a massive siege of Fort Boqueron. It began with the Battle of Pitiantuta, and one decisive battle saw the defeat of General Penaranda. The defending country was led by Jose Estigarriba and advised by numerous Russian migrs such as General Belaieff. The attacking country, led by President Salamanca and General Hans von Kundt, had warplanes and tanks, but these proved ineffective against the guerilla tactics of Paraguay. For ten points, name this 20th century war where Bolivia failed to conquer the namesake region.
Output (English): History