The Gemara in Rosh Hashana 26a says:
ואמר רבי עקיבא כשהלכתי לאפריקי...
Rabbi Akiva said: when I went to Afriki
Is this referring to the continent of Africa?
Was Africa in this time period known by that name?
Are there any other Gemaras which talk about a trip to Africa that the Tanaim went on?