Read the passage from "Marriage Is a Private Affair" by Chinua Achebe.
How does Okeke's change in attitude challenge the
patriarchy?
Then one day he received a letter from Nene, and in
spite of himself he began to glance through it
perfunctorily until all of a sudden the expression on his
face changed and he began to read more carefully.
... Our two sons, from the day they learnt that
they have a grandfather, have insisted on being
taken to him. I find it impossible to tell them that
you will not see them. I implore you to allow
Nnaemeka to bring them home for a short time
during his leave next month. I shall remain here in
Lagos...
The old man at once felt the resolution he had built up
over so many years falling in. He was telling himself
that he must not give in. He tried to steel his heart
against all emotional appeals. It was a re-enactment of
How does Okeke’s change in attitude challenge the patriarchy?
Okeke has no desire to see his grandsons because
they come from a marriage he did not approve.
o Okeke is insulted and disturbed that Nene has sent
him such a rude letter
O Okeke wants to see his grandsons even though they
are not the product of a traditional arranged
marriage
O Okeke is surprised that his son and daughter-in-law
have refused to let him see his grandsons.

"Marriage Is a Private Affair":

The challenge to the patriarchy by Okeke's change in attitude happened this way: O "Okeke wants to see his grandsons even though they  are not the product of a traditional arranged marriage."

In some traditional societies, the oldest man (patriarch) in the family ultimately determines all issues.  He approves, for example, the spouses that his family members would marry.

However, this patriarchal cultural practice would be challenged as young men and women migrate to the cities, where they meet other young men and women from various cultural backgrounds.

There is bound to be intermarriages, which would draw the ire of patriarchal traditionalists.  This is exactly what happened in "Marriage is a Private Affair," a short story by renowned novelist, Chinua Achebe.

In the story, Okeke refused to allow his son Nnaemeka to get married to Nene, who was not from his Ibo tribe.  But Nnaemeka would not be dissuaded from the marriage with his heartthrob.  Instead, he risked being ostracized by his family and tribe.

Fortunately, Okeke was a man of conscience who could not continue to insist on patriarchy when he longed earnestly to meet his grandchildren, the products of the unapproved marriage.

Learn more about Okeke's attitude in "Marriage is a Private Affair" by Chinua Achebe here:

once upon a midnight dreary, while i pondered, weak and weary,

explanation:

c.to compare several aspects of the tragedy to other worldwide tragedies