A histortian reviews sevreal of his collegas books about early african states. He then wrights his own book summarrizing the finding in this books

Making and evaluating arguments and interpretations.

Explanation:

I have attached the complete question. Based on the information given, the historian in the passage is most clearly demonstrating the skill regarding the making and evaluating of arguments and interpretations.

In this case, he's reviewing the work of others and he'll then write about the opinions that he believes he supports and those that the historian is a critic of. He's therefore making and evaluating arguments and interpretations.

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34

first industrial revolution - the first wave of the industrial revolution lasted from the late 1700s to the mid-1800s. it industrialized the manufacture of textiles and began the move of production from homes to factories. steam power and the cotton gin played an important role in this period.