On his first day in office, President Donald Trump signed an executive order stopping USAID projects worldwide, saying he wants overseas spending decisions to align with his election policy to "put America first".

USAID is the US government's main overseas aid agency and it administers humanitarian aid programmes on behalf of the US government.

It has bases in more than 60 countries and works in dozens of others. However, most of the work on the ground is carried out by other organisations that are contracted and funded by USAID.

The vast majority of projects have been abruptly halted. But what has this decision meant for the people who relied on them? From Kenya’s Lake Victoria to Nairobi’s slums, we explore the profound impact on lives, businesses, and livelihoods.

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Presented and produced by Sam Fenwick

(Image: Little boy walking on railroad tracks with Kibera slum in the background. Nairobi, Kenya. Credit: Getty Images)