generate questions: With the Treaty of the Pyrenees (1659), Spain ceded the northern part of Catalonia to France, and soon thereafter the local Catalan varieties came under the influence of French, which in 1700 became the sole official language of the region.
When was the Treaty of the Pyrenees? {sep_token} What part of Catalonia did Spain give to France? {sep_token} Why did Spain give part of Catalonia to France? {sep_token} What language began to influence Catalan? {sep_token} When did French become the official language of that part of Catalonia? {sep_token}