Original sentence: Thus, the first modern rounding of the cape in 1488 by Portuguese explorer Bartolomeu Dias was a milestone in the attempts by the Portuguese to establish direct trade relations with the Far East (although in his histories Herodotus proves, disbelievingly, that some Phoenicians had done so far earlier than this)
Edited sentence: Thus, the first modern rounding of the cape in 1488 by Portuguese explorer Bartolomeu Dias was a milestone in the triumph by the Portuguese to establish direct trade relations with the Far East (in his histories Herodotus proves, disbelievingly, that some Phoenicians had done so far earlier than this)