explain why the person, place and time of the recording can effect the value of a source to a historian

Sparta faces threats from without and within the city-state who posed these threats.

Why did the meiji reformers want to modernize japan a) to colonize weaker nations in south east asia b) to allow western nations to protect them and treat negotiation c) to compete with the economics and military of western nations d) to replace additional prices with weston culture

Which scenario is not an example of one of the primary motivations for bias in media coverage