What is quipu and what is it used for?

When recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous years?

This was an act of continental congress which initially organized the first united states territory and was to be the basis for governing how the united states would expand westward.

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.