Compare (what's the same) and contrast (what's different) the Byzantine Empire with the Western Roman Empire.

explanation:

sorry english

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.

protectionism fosters competition and keeps price regulated is not an argument in favor of protectionism.