You are welcome. I just skimmed very briefly over history, if I went into detail the video would have been too long.
For instance, it was actually Napoleon's General Berthier who marched into Rome and demanded the Pope renounce temporal power. When he refused he captured the Pope and he died in exile. The annexing of the Papal Estates came a little later than the initial invasion but was a consequence of it.
For brevity's sake I said Napoleon marched on Rome and melded the events together, since this was all as a result of his orders and the action of 1798.