Delaware was the first state to ratify the constitution
That wasn't true for the economies at the end of the World War II was that the GNP and corporate profits doubled.
I believe the answer is B and D
The cotton gin, because it separated cotton seeds from rock out in which was safer, and more efficient.
The Water loom/ water frame was a large spinning machine that was powered by water to produce cotton yarn suitable for warp.
The power loom it wove thread automatically, which was quicker and really helpful.
The emperors and empresses convoked religious councils, which had to make a decision. These councils were convoked only to solve issues caused by the Iconoclast Controversy.