The UN General Assembly has voted to replace the traditional Mercator world map with one that more accurately reflects the size of Africa.
The "Correct the Map" non-binding resolution, sponsored by Togo and backed by African Union (AU) members, passed with the support of 164 nations. The United States was the only nation to vote against it - and there were six abstentions.
The Mercator map, which has been in common use since the 16th Century, shows Africa as similar in size to Greenland, even though it is 14 times larger.
The Mercator map was designed in 1569 by the Flemish cartographer Gerardus Mercator to help European explorers navigate across the world.
The Mercator map shows the curvature of the Earth by making countries near the equator seem smaller than they are, with countries nearer the poles appearing bigger.
In an effort to correct this, a team of cartographers in 2018 created an equal area map they called the Equal Earth projection.
Yaryna Ferencevych, a US representative at the UN, said the resolution mocked the work and purpose of the UN General Assembly.
"Instead of focusing on genuine problems of international peace, prosperity, or good relations, this body is debating map projects from the 16th Century, and their role in promoting reparations and 'cognitive justice'," she said.