Some sources claim that Malian soldiers arrived in the Americas in 1311 CE. For example, in Silicon Africa: 100 African Cities destroyed by Europeans:
Malian sailors got to America in 1311 AD, 181 years before Columbus. An Egyptian scholar, Ibn Fadl Al-Umari, published on this sometime around 1342. In the tenth chapter of his book, there is an account of two large maritime voyages ordered by the predecessor of Mansa Musa, a king who inherited the Malian throne in 1312. This mariner king is not named by Al-Umari, but modern writers identify him as Mansa Abubakari II.”
And according to 100 things that you did not know about Africa:
Malian sailors got to America in 1311 AD, 181 years before Columbus. An Egyptian scholar, Ibn Fadl Al-Umari, published on this sometime around 1342. In the tenth chapter of his book, there is an account of two large maritime voyages ordered by the predecessor of Mansa Musa, a king who inherited the Malian throne in 1312. This mariner king is not named by Al-Umari, but modern writers identify him as Mansa Abubakari II.
And in Born Black Magazine:
Citing the book written by the famous Egyptian scholar, Ibn Fadi Al-Umari in 1342, there were two large voyages across the Atlantic Ocean preceding that of Columbus. Both Expeditions were pioneered by one man, Abubakari or to give him his rightful name, Mansa (King) Abubakari II.
Wikipedia only has this to say about it:
North African sources describe what some consider to be visits to the New World by a Mali fleet in 1311.[
71
]. According to these sources, 400 ships from the Mali Empire discovered a land across the ocean to the West after being swept off course by ocean currents. Only one ship returned, and the captain reported the discovery of a western current to Prince Abubakari II; the off-course Mali fleet of 400 ships is said to have conducted both trade and warfare with the peoples of the western lands. It is claimed that Abubakari II abdicated his throne and set off to explore these western lands. In 1324, the Mali king Mansa Musa is said to have told the Arabic historian, Al-Umari that "his predecessors had launched two expeditions from West Africa to discover the limits of the Atlantic Ocean."
All seem to source the claim to a 1342 book by Ibn Fadi Al-Umari, but the sources who describe this account seem to be mostly from an African perspective. That doesn't mean it's false, but I wonder why I don't get "normal" history sites when looking for this. Is this account of history generally accepted among historians, or should it be categorised as pseudohistory? Or is it more subtle than that?
BBC Source - http://news.bbc.co.uk/2/hi/africa/1068950.stm