Research describing a link between childhood vaccines and autism has been

a. confirmed by multiple studies
b. retracted due to a financial conflict of interest by the author
c. found to have been based on falsified data
d. published once but not confirmed

B. retracted due to a financial conflict of interest by the author

Explanation:

The name of the author related to that research is Andrew Wakerfield.

He is a British Surgeon who is working together with another company to develop a certain type of drug which he promise will prevent autism among children.

Manipulating research to make it look like there is a link between childhood vaccines and autism was made as an elaborate shceme to make parents choose to buy his drug instead.

the aksumite empire was an ancient kingdom located in what is now northern ethiopia from the period of 100 ad to 940 ad. its capital was the city of aksum. the kingdom established itself as one of the 4 great powers at its time, along with persia, rome, and china.

the kingdom was rich in goods like gold, iron, and salt. it established strong commercial ties with the regions governed by rome, egypt, and persia (arabia). aksum was a key location in this commercial network. trade was also facilitated with the introduction of the aksumite currency.