Which sentence from "Wrong on Snakes" is evidence of author bias? ​

What event was one of the greatest factors that led to massive emigration from ireland to the united states in the mid—1800s

Initially, northerners did not want missouri to be included in the union because 1.) maine would not be allowed to enter the union as a free state 2.) missouri wanted to enter the union as a free state 3.) missouri wanted to enter the union as a slave state 4.) maine would not be allowed to enter the union as a slave state

During he 1840s, more americans than british settled in the oregon country. how do you think this settlement influenced negotiations with the british over the territory