He enslaved them.
The Torah doesn't mention the name of the Pharaoh who enslaved the Hebrews.
After the Pharaoh died, and the new Pharaoh took over, they were enslaved.
The Hebrews were enslaved by the Pharaoh. For clarification, Hebrew is the term for Jews and Christians before they separated into two religions.
The Pharaoh was afraid they'd join his enemies if war came, so he enslaved them.
A dynasty in Egypt did.
The Hebrews were enslaved by the Egyptians. The Egyptian people didn't necessarily enslaved the Hebrews, The Hyksos took over Egypt and then they feared that the Hebrews were to powerful so they enslaved them.
The Israelites came to Egypt during a time of famine and stayed there. A later Pharaoh who did not know what Joseph had done for the Egyptians enslaved them.
The three civilizations that conquered the Hebrews were: Egypt, Assyrians, and Chaldeans. The Hebrews went through a cycle of being captured, enslaved, and freed.
They were shepherds under the protection of the Pharaoh of that time and his viceroy, Joseph.
They were slaves to Pharaoh.
Because the Hebrews were starting to outnumber the Egyptians in population.