The correct answer is - D. how to make iron.
The Zhou dynasty was one of the greatest dynasties of China, and among many achievements of their reign, the artisans of this dynasty managed to learn how to make iron. This was revolutionary for the Chinese people, and it was of great use in the agriculture after the tools for it started to come in iron version, and it made everything much easier, quicker, and more efficient.
As part of being readmitted to the Union, states had to ratify the new amendments to the Constitution. The Union did a lot to help the South during the Reconstruction. They rebuilt roads, got farms running again, and built schools for poor and black children. Eventually the economy in the South began to recover.
Of or according to the teaching of the gospel or the Christian religion.
