Daniel 8:8, 22

so the male goat became very great. But when he was strong, his big horn broke off and four horns grew in place of the one big horn. Those four horns pointed in four different directions and were easy to see.

The four horns that grew in the place of the broken horn are four kingdoms. Those four kingdoms will come from the nation of the first king, but they will not be as strong as the first king.