Complex sentence: From September to November 1840, a combined naval fleet, made up of British and Austrian vessels, cut off Ibrahim's sea communications with Egypt, followed by the occupation of Beirut and Acre by the British.
Split into simpler sentences: From September to November 1840, a combined naval fleet, made up of British and Austrian vessels, cut off Ibrahim's sea communications with Egypt. This is followed by the occupation of Beirut and Acre by the British.