Which is not a similarity shared by the inca and aztec civilizations?
a) both aztec and inca built large capital cities and monuments.
b) both aztec and inca used quipu to keep track of records and transactions.
c) both aztec and inca religious beliefs centered around gods of the sun and moon.
d) both aztec and inca developed inventive ways to farm to feed their populations.

B) Both Aztec and Inca used quipu to keep track of records and transactions

Explanation:

The Aztec and the Inca civilizations had numerous things in common, as did big portion of the civilizations of Mezoamerica and South America. They had similar gods and religious practices. Both of them where very innovative when it agricultural practices, and they were building beautiful large capital cities and monuments. What was not a trait of both of them was the quipu. The quipu was only used by the Inca, and it was their invention. The quipu was used by the Inca in order to keep track of records and transactions, thus it was very useful in the daily lives of the people of this Andean civilization.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories