Complex sentence: The Chamber of Deputies elected in 1846 was abruptly disbanded by the February Revolution, which oversaw an unprecedented direct election by universal suffrage to convene a Constituent Assembly that was followed by a National Legislative Assembly in 1849.
Split into simpler sentences: The Chamber of Deputies elected in 1846 was abruptly disbanded by the February Revolution. A new election by direct universal suffrage chose a Constituent Assembly, followed by a new National Legislative Assembly in 1849.