<span>she is of a different tribe, this makes him uncomfortable. He wants a wife from the same tribe. This will allow him more social acceptance and greater social mobility. He wants a partner who will help him succeed in life and will support and uphold his values and his standing in society. There are other choices within his own tribe that he would be more open to and with whom he would rather make an alliance. It would be better to find a wife and life partner from his own tribe, this would make raising children easier and life would proceed more smoothly. His wife would be more quickly accepted into his life and family and this would promote a more peaceful life for him and a brighter future.</span>
'She was of different tribe' was not a reason for Nnaemeka’s objection to the girl his father has chosen.
Nnaemeka didn't want to the girl his father Okeke has chosen for him. He loved Nene and wanted to marry her. Okeke was against the marriage as Nene belonged to a tribe. Okeke wanted his son to marry the girl of the same tribe in order to get acceptance from the society. Since he was one of the renowned people in his village, he didn't want his son to commit to anything which would turn his position in front of the village.
In "The feather pillow" by Horacio Quiroga when the parasites don't have a human to feed on they usually are small, they are parasites of feathered creatures. This parasite, in particular, has been feeding on Alicia's blood, that is why it became so monstrous. We learn about this in the last parragraph of the story.
This is due to warmer climates that are closer to the equator and therefore having a higher likely hood of there being more swamps closer to the equator.
