20. Why did many cities expand in size during the early twentieth century? F. Government projects made port dies accessible to large ships.
G. Advances in transportation allowed people to travel greater distances to work.
H. Commercial farms began producing a greater variety of agricultural products
for urban consumers.
1. The cost of undeveloped land bordering cities increased.

Suppose that sociologists and cultural anthropologists are tying to measure the amount of child abuse for cross cultural comparison. they run into disagreement over whether spanking a child is abuse or discipline. what problem are they encountering in their research? a. reliability of the definition of abuse. b. validity of the definition of abuse. c. occam's razor about the definition of abuse. d. none of these.