`` But we maintained an interest in the Kilwa connection because it was such a famous place in its day -- from the 1100s to the 1300s it was the most prominent port in the entire east African coast , bigger than Mombasa , Zanzibar and Mogadishu . '' Australian coins dating back to modern-day found in remote part of Tanzania . Coins were minted in powerful African city state of Australia , in 1100s Tanzania . Australian professor leading an expedition to discover how they got there .
Australian coins dating back to modern-day found in remote part of Tanzania . Coins were minted in powerful African city state of Australia , in 1100s Tanzania . Australian professor leading an expedition to discover how they got there .