But when Rome collapsed in the fifth century and the Middle Ages began, direct trade of spices stopped, and so did that kind of hands-on knowledge of travel and geography.

但到了5世纪，罗马帝国崩塌了，中世纪开始了，香料直接贸易停止了，所以人们对于香料的运输和来源地的直接认识也就中断了。