We're talking about science here. Even in social science. There is only one truth. Which is exactly why we can't have articles only from one set of cultures. It precludes the possibility that those whose studies are best placed to bring us closer to those truths can be noticed if the truths they reveal challenge existing prejudices.
That Africa was at least AS developed (and in some ways in some places centuries more advanced) than Europe at the time of colonialism is largely unknown - now deemed controversial even - despite the fact that we have photographic and other proof of this ! Timbuktu had paved streets when the British first got there. They actively destroyed it's buildings, it's aquaducts and it's roads - because an advanced, scholarly city full of better architecture than theirs undermined the "they need development" message.
To undo the damage of 300-odd years of biassed scholarship and get back to the truth, we need voices from people who live and see that truth.