The Austrian imperial government was unpopular because of their anti-liberal politics and Northern Italy became the intellectual centre leading the Italian unification process. Piedmont and the Kingdom of Sardinia, in particular, was the state that launched Italy's unification in 1859–1861. After defeating the Austrians in 1859 and annexing Northern Italy the new state proceeded to launch a campaign to conquer Southern and Central Italy and Turin briefly became the capital of the almost whole of Italy.