Complex sentence: The radicals preferred a unitary republic, and once the republic had been declared the two parties turned against each other; initially the radicals were largely driven from power, joining those who had already been driven out by the revolution of 1868 or by the Carlist War.
Split into simpler sentences: The radicals preferred a unitary republic, and once the republic had been declared the two parties turned against each other. Initially, the radicals were largely driven from power, joining those who had already been driven out by the revolution of 1868 or by the Carlist War.