Petroleum refining, steel manufacturing, and electrical power
If this refers to World War II, then women who worked in factories were symbolized by C. "Rosie the Riveter".
Im asian so slay I’ll explain.
EXPLANATION : Back then rivers were important to many settlements such as ancient Egypt because they grow crops, etc. Its the same thing for ancient china. The yellow river was a important river because it provided farmland for china and was basically born for farming.The yellow river’s water carries silt which is how it got its name and when the river would flow it leaves yellow residue behind. Silk was important to ancient china because back then they traded with other places a lot and silk was a main material that was traded.
Yas: I hope this was helpful and sorry if I explained it in a very longgg way
In 1787, delegates met in PA. They came from all of the 13 states except Rhode Island~