Complex sentence: St. Vincent was ceded to Britain by the Treaty of Paris (1763), restored to French rule in 1779 and regained by the British under the Treaty of Versailles (1783).
Split into simpler sentences: St. Vincent was ceded to Britain by the Treaty of Paris (1763). Restored to French rule in 1779, St. Vincent was regained by the British under the Treaty of Versailles (1783).