8. why was the development of iron working important to civilizations?

It usually coincided with the development of more superior culture and population growth.

i believe the answer would be 1.

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.