Galatians 4:4 says God sent His Son, born of a woman, born under what?

Answer: The law

When the time had fully come, God sent His Son, born of a woman, born under the law, to redeem those under the law.

“But when the time had fully come, God sent His Son, born of a woman, born under the law, to redeem those under the law, that we might receive our adoption as sons.”— Galatians 4:4-5 (BSB)