How did Islam impact West African culture? In this article “Chapter 15- The Cultural Legacy of West Africa”

i think it should be slowed colonial western march

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.

the answer is "focused on"

lol gave an answer 1 week that's the answer for those who need it in the future xd

d) in the state of iowa