What prince was enamored with Africa, felt he could convert Africans to Christianity, and wanted to find the source of the gold controlled by Muslim traders?

experiments.

surveys.

questionnaires.

interviews.

case studies.

participant and non-participant observation.

observational trials.

studies using the delphi method.

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.

okay what's the question?