A Triangle for Adaora: An African Book of Shapes by Ifeoma Onyefulu

From chapters.ca:
In the center of Adaora's slice of "paw-paw" is a perfect star shape. She doesn't want to spoil it, so she and her cousin Ugo set off to find a different piece of fruit. As they walk, the children see all kinds of shapes: Uncle Eze's rectangular "agbada," musicians playing circle- topped elephant drums, a crescent- shaped plantain, even plants with leaves in the shape of a heart. Ifeoma Onyefulu's vibrant prose and vivid photographs are a charming introduction to both shapes and to Nigerian village life. Sidebars provide further details about the fascinating objects illustrated.

The Other Side of Truth by Beverley Naidoo

From the back of the book:
Twelve-year-old Sade's journalist father is a vocal critic of the corrupt military government in Nigeria. When Sade's mother is murdered, her family sees in bloody detail the violent risks that come with exposing the truth. Her father arranges for Sade and her younger brother to be smuggled to their uncle in London for safety. On the streets of London, the plans fall apart and they are abandoned, passed from foster home to foster home. They try to contact their uncle but he is missing. Then they learn that their father has escaped to London to find them - but he will be sent back to Nigeria, unless Sade can find a way to tell the world what happened to her family.

Things Fall Apart by Chinua Achebe

From Wikipedia:
The novel concerns the life of Okonkwo, a leader and local wrestling champion throughout the nine villages of the Igbo ethnic group of Umuofia in Nigeria, his three wives, his children (mainly concerning his oldest son Nwoye and his favorite daughter Ezinma), and the influences of British colonialism and Christian missionaries on his traditional Igbo (archaically spelled "Ibo") community during an unspecified time in the late 1800s or early 1900s.