"which theory shares some conceptual overlap with pangenesis? "

The theory that shares some conceptual overlap with pangenesis is Germ-plasm. The Germ-plasm theory proposes or suggest that the reproductive cell contains genetic information or that it has a complete set of genetic information by which this explanation overlaps with pangenesis.

industry had made the u.s. the richest nation in the world at this time. the second industrial revolution caused growth in industry and transportation, which allowed increased trade between nations.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.