What did Jeroboam make to keep people from going to Jerusalem?

Answer: Two golden calves

Jeroboam made two golden calves and set them up in Bethel and Dan.

“After seeking advice, the king made two golden calves and said to the people, “Going up to Jerusalem is too much for you. Here, O Israel, are your gods, who brought you up out of the land of Egypt.””— 1 Kings 12:28 (BSB)