The answer is B. I just took the test
I guess you just have to search it up loll
Answer:
Developed advanced mathematical skills.
Explanation:
The Aztec and Incan Civilization was part of the ancient civilization that flourished before the arrival of the European in the New World after the discovery of America by Christopher Columbus.
Both of the civilization cultures developed complex mathematical systems and impressive advances in astronomy.
The Aztecs had their form of calculation where they used a base-20 number system.
There are state and federal excise taxes. State and federal inheritance taxes began after 1900, while the states (but not the federal government) began collecting sales taxes in the 1930s. The United States imposed income taxes briefly during the Civil War and the 1890s, and on a permanent basis from1913<span>.</span>
As the name suggests, Indus Valley is not a mountain range, and it is a valley around the Indus river instead. The remaining options are all mountain ranges.
