No, this deed was done by a man from Mbaino.
Yes, Okonkwo accidentally killed a clansman from Umuofia, not a woman.
Okonkwo wants to resist the influence of the white men in Umuofia. He believes they are a threat to their traditional way of life and wants to take a strong, forceful stance against them to protect his community and its customs.
Mbaino greets Okonkwo warmly, and agrees to give him a young boy and a virgin to take back to Umuofia. It offers a boy to Umuofia to sacrifice
After being banished from Umuofia, Okonkwo goes to his mother's village, Mbanta, to seek refuge and protection from his mother's kinsmen.
Okonkwo originally lives his life in Umuofia, but he is exiled for seven years. During this time, he lives in his motherland, Mbanta. He eventually returns to Umuofia.
Okonkwo has hanged himself.
He is not. He grows yams in Mbanta instead. Okonkwo previously had yams stored in Umuofia, which were transferred to Obierika's barn. These were then sold by Obierika, with the proceeds given to Okonkwo.
Mbaino is the village which Ikemefuna lives in before he is forced to live with Okonkwo in Umuofia in order to repent his father's crime. It is significant because in essence, things begin to "fall apart" for Okonkwo after Ikemefuna is killed by Umuofia. Okonkwo becomes haunted by his choice to kill Ikemefuna. In fact, Ikemefuna's death begins Okonkwo's downfall.
Okonkwo had several titles including presumably the title of ozo.
Okonkwo first noticed that the church had also arrived in Umuofia. He noticed everything the white men had brought including the government, the courts, and the prisons.
Okonkwo does not ask Ezinma to not marry, but rather to not marry anyone in his motherland of Mbanta, as then she would become part of that village. Okonkwo would rather have her marry a titled man in Umuofia, to increase their family's influence and togetherness in Umuofia.
Okonkwo's mission to Mbaino is successful in resolving the conflict between the two villages when Mbaino offers a virgin girl and a young boy as compensation for the murder of a woman from Umuofia. This peaceful resolution avoids a full-scale war between the villages.
The 2 villages are never almost at war. Umuofia's sending of a emissary in order to deal with the killing of a Umuofian clanswoman in the marketplace of Mbaino helps settle the issue, as Mbaino acknowledges that they were at fault, agreeing to compensate Umuofia.