Complex sentence: Kleber did restore French rule over the country thanks to his victory at Heliopolis on March 18,1800, but less than a month later he was murdered in his garden in Cairo by a student of theology.
Split into simpler sentences: Kleber did restore French rule over the country thanks to his victory at Heliopolis, March 18,1800. But less than a month later he was murdered in his garden in Cairo by a student of theology.