The statement that accurately describes how foreign lands influenced East Africa is:
Contact through trade resulted in a multicultural mix that influenced language.
This statement reflects the historical interactions between East African societies and traders from various regions, which led to the exchange of languages, cultures, goods, and ideas. The Swahili Coast, for example, is known for its rich cultural exchange due to trade with Arab, Persian, Indian, and later European merchants, significantly influencing the region's languages and cultures.