Before their slavery, all tribes that were not the chosen line of Hebrews were destroyed in the Flood. Noah and his family were spared, produced and multiplied. There were no other races until the Tower of Babel. Exodus 1 speaks of the beginning of their slavery to Egyptians, then in Exodus 3 Jehovah, God hears their cries in verse 9 Now therefore, behold, the cry of the children of Israel is come unto me: and I have also seen the oppression wherewith the Egyptians oppress them.
Saudi FM: We hope Iran uses sanction relief for development, not nefarious activities (Reuters)
from the article: Were Jews ever really slaves in Egypt, or is Passover a myth?