Slavery in the american colonies was

a) concentrated mostly in the new england colonies.

b) concentrated mostly in the middle colonies.

c) concentrated mostly in the southern colonies.

d) evenly distributed throughout all the colonies

the section of the chart that represents a point at which a bill needs approval from a majority of people in both chambers to advance is j, as this is the only section before the bill becomes law which has both rows (symbolizing the chambers) converging into one, meaning that the two parts of the congress have to approve of it before it can march on with the process.