What happened during caligula's empire?

The reign of Caligula is mostly noted for his cruelty, sadism and sexual perversion. He worked very hard at removing any legal restraints that prevented the emperor from exercising unconstrained power. He spent lavishly on luxurious housing for himself. However, he did annex the Kingdom of Mauretania, and constructed two new aqueducts during his reign. He was assassinated in 41 AD by his Praetorian Guard.