Funded by Britain's Colonial Office and shot on location in Udi, in present-day Enugu State, this documentary follows a Nigerian community building a rural maternity home through collective self-help methods, and won the Academy Award for Best Documentary Feature in 1950.
Fun fact: It is often cited as the first Nigeria-set film to win an Oscar, and also won a BAFTA for Best Documentary, though it was a British Colonial Office production rather than a Nigerian-directed work.