Chinese immigrants wanted to establish their own railroads.
Natural disasters such as an earthquake and lake texcoco flooding, then tha spanish came and spread disease.
Not all southerners are republicans
Wampanoag. First English speaking Indian they met was Squanto
Well although obviously none of these are exact, there was definitely more than 70, and definitely not 70,000, so by process of elimination, I would say the answer has to be 7,000.