What are the events that lead up to Okwonkwo's exile from his homeland?

In an effort not to appear weak and lazy like his father,
Okwonko does several things that eventually lead to his banishment from his village.
Okwonko adopts Ikemefuna, a young boy given to Okwonko's village, and Ikemefuna lives
with Okwonko's family for three years. Okwonko cares about Ikemefuna and considers him a
good role model for Okwonko's son who seems to have the characteristics of Okwonko's
father. The Oracle of the Hills and Caves requires that Ikemefuna be sacrificed, and
Okwonko is warned by the eldest man in the village not to take part in the killing of
the boy. Okwonko, however, doesn't want to appear weak, so he joins in the killing of
Ikemefuna anyway. His son is angry with Okwonko and their relationship is never the
same.

The next two events leading to Okwonko's exile is
when he beats his youngest wife during the Week of Peace and fires a gun at another wife
during the Yam Festival. These actions show Okwonko's lack of respect for the traditions
of his community by allowing his anger to get out of control in order to keep his family
under his thumb.

The last event occurs during the funeral
of the eldest man in the village, Ezeudu. Okwonko's gun accidentally goes off, killing
Ezeudu's son. Ani, the Earth Goddess, is so angry at Okwonko's constant defiance of the
village's rules and laws that she sends him to live with his mother for seven years. The
order of the village relies on adherence to the traditional customs and beliefs, and
when Okwonko defies to break these traditions, he must be
punished.