<P> In the 19th century, the Nun was a hub for trade between the Igbo Kingdom, which was based at Aboh, and Europe . The river's trading history began with the trade of slaves but was later replaced by palm oil export . At the turn of the century, however, the river mouth silted heavily, blocking the passage . Subsequently, traders began using the more accessible waters of the Forcados River . </P> <P> The Nun River is immortalised in the poetry of Gabriel Okara . His poem "The Call of the River Nun" is a nostalgic ode to the river that passes through his home . </P>

Summary of the poem the call of the river nun by gabriel okara