Which of the following does the author of Source 1 cite as evidence of cultural exchange between East and West Africa during the First World War?
A) Experiments in architecture and the gathering of souvenirs
B)Learning parades and drill
C)Learning the care and maintenance of modern weapons
D) Spreading methods of disease control and health care

swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.