B and C
The Mayans were polytheistic (worshiped multiple deities) so A is incorrect.
They had their own form of hieroglyphics so B is correct.
The practice of astrology was one of the most important aspects of Mayan culture, and they supplemented their knowledge of the stars using math to figure out complex patterns so C is correct.
It was the Incas, NOT the Mayans who had runners, so D is incorrect.
If you are talking about the Second Industrial Revolution, then the person who had a monopoly in the steel industry was Andrew Carnegie.
Hope this helps!
I've had to do this so I know that:
--2500 BC--
Back in 2500 BC people spent there time in the Indus River Valley by farming (which the women did), hunting down for food (which the men did) while sometimes teaching their sons to do so as well, and getting water from the to rivers of Mesopotamia. (The Tigris river and the Euphrates river).
--Today--
But nowadays people still live there (I think) and do the same but of course don't hunt for food because there are supermarkets and they get water there as well but many people may still get water from the river.
I hope this helped! If it did, ask me more questions and I will be sure to answer them! :)
The answer is he Unified China. Hope this helps!
