Conversation so far:
what did Louis XVIII of France do in england?
Following the French Revolution and during the Napoleonic era, Louis XVIII lived in exile in Prussia, England, and Russia.
why did Louis XVIII of France live in exile?
Louis XVIII was forced to abandon Verona when Napoleon Bonaparte invaded the Republic of Venice in 1796.

Question: what did they need asylum from?
Self-contained rewrite: what did Louis XVIII of France need asylum from?