They went to Egypt in the first place to escape the famine.
Moses
The number of Israelites that did not leave Egypt is not mentioned in the Old Testament. It is estimated about 2 million to 3 million did leave Egypt, including men, women and children.
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.
Pharaoh heart was hardened , so he would not let the Israelites free.
According to the narrative in the Torah, all of the Israelites left Egypt.
the Israelites did not leave during passover. When they did leave it was Moses who lead them.
They didn't. There are no records of any Israelites being in Egypt apart from the Old Testament. No Egyptian records or any other records mention them at all.
According to tradition, it was in 1522 BCE.
Moses or Abraham led the israelites out of Egypt i believe
There was a drought and famine in Jacob's time, so the Israelites went to Egypt because "there was grain in Egypt". Joseph, Jacob's lost son, as vizier in Egypt, has wisely built storehouses for Egypt's grain during the years of plenty to give out in the years of famine. Jacob's other sons came and requested some of the grain that Joseph had saved. When Joseph reunited with his brothers, he eventually had the rest of the family brought down to Egypt, to protect them from the famine. They stayed in the Land of Goshen as guests of the Pharaoh. Later on, in Moses' time, the Israelites had to leave Egypt and go to Canaan in order to escape their enslavement.
the departure of the israelites from egypt
According to traditional chronology, it was in 1522 BCE.