Witch statement best express the central idea of the text

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

In what ways did the compromise of 1850 and the kansas-nebraska act of 1854 differ from the missouri compromise? both compromises used the established 36°30′ parallel to determine if territories would become free or slave states. both compromises used the mason-dixon line to determine if the territories would become free or slave states. both compromises let territories use popular sovereignty to determine if they would become free or slave states. both compromises only granted congress the power to determine if territories would become free or slave states.

"all the characteristics and experiences that define each of us as individuals" is the definition of