Famine.
they moved to Egypt.
They left because of a famine.
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The famine was in the Land of Canaan (later called Israel), and they Hebrews migrated to Egypt.
The Israelites returned from Egypt to Canaan because God told them to (Exodus ch.3).
1250 b.c.
The Israelites left Canaan and fled to Egypt because of famine. The famine was caused by a severe drought that left their crops dead and their people hungry.
Abraham left Canaan (not Egypt) because of a famine. According to traditional chronology, this was in 1737 BCE.See also:Abraham's biographyTimeline
Famine in Canaan, i.e., scarcity of food for people or their flocks and herds.
The Torah gives the reason in Genesis ch.45. The land of Canaan (Israel) was experiencing a famine, while there was food to be had in Egypt.
Because of famine (Genesis 43:1), and God's leading. Chapters 43-47. The famine meant a scarcity of food for people and their flocks and herds.