What big historical events happened during the time of the spanish painter diego velazquez?

Answer 1

I am not sure but could it be this:
La rendición de Breda (1634-1635, English: The Surrender of Breda) was inspired by Velázquez's first visit to Italy, in which he accompanied Ambrosio Spínola, who conquered the Dutch city of Breda a few years prior. This masterwork depicts a transfer of the key to the city from the Dutch to the Spanish army during the Siege of Breda.