According to the preference satisfaction theory, is it better, worse or the same for Nancy to actually climb Mt. Everest than to get into the experience machine? Would it be:
- better
- worse
- the same

answer; the importation of slaves from africa,//   is the correct answer.

competition i thin

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.

what is the question you are trying to ask?