The gold-for-salt trade made the Region very rich.
Central pacific railroad built the transcontinental railroad eastward from Sacramento California by hiring 10,000 chinese laborers to work on the tracks
The answer D.) is False. Many underdeveloped nations (The entire African continent, for example), has a long past of being colonized by Europe. (Rush for Africa.) That's actually the main reason their growth was stifled in the first place.
