Leopoldo O'Donnell's Liberal Union, which is an…

Leopoldo O'Donnell's Liberal Union, which is an attempt to fuse all dynastic parties in a broad-based coalition, has provided a long period of stable government from 1856 to 1863).

The so-called bienio progresista has witnessed economic expansion, a compromise solution to the problem of church property, and O'Donnell's opportunistic interventions in Morocco, Santo Domingo, and Mexico.