I hope that was a 1.0 game; in 1.1, Spain should be much larger than 35 provinces.No screen, but I diploannexed Spain as France in AGCEEP in the early 1700s...
with colonies (+35 BB but no one dared to attack me).
Or set difficulty to Very Hard. Badboy wars are fun (for some people).Set AI aggressiveness to "Normal"