They had to swear an oath of allegiance to the US. Ten percent of the states voters had to want back in. Each state had to abolish the institution of slavery.
*Former confederate stares had to swear an oath of allegiance to the United States.- To avoid warfare happening between US states.
*Ten percent of the states' voters had to want back in.- Because if it was a greater percentage many of the Southern states would not have the votes to rejoin the United States.
*Each state had to abolish the institution of slavery. A necessity of the society at that time.
