Were Egyptians, as a large group, slaves in Abram’s time & does this have anything to do with the iniquity of the Amorites?

NASB95 for reference Genesis 16:1 Hagar is the Egyptian handmaid/slave of Abram & Sarai. Genesis 15:16 God tells Abram his descendants will be enslaved for 400 years because of the iniquity of the Amorites. Are the Hebrews enslaved by …