Assertion: causeway's construction | /r/HasProperty | african
Facets:
Source sentences:
text: The fishermen today call them "Arab Roads," which is a reference to the oral history which credits the founding of Kilwa to the Arabs, but like Kilwa itself the causeways are known to have been African constructions, built as navigational aids for ships plying the trade route in the 14th-15th centuries and complementing the Swahili urban architecture.