Moving water from a river to fields of crops.

When you have one leader ruling over many different communities.

A mathematical system based around the number 60.

These were used to sign documents with unique pictures, like how we sign our names today.

a wheeled cart pulled by horses

games that are usually played on a board with other small pieces

a kind of metal that was good for making stronger weapons and tools

a calendar that uses the changing moon as a guide

a kind of writing that includes stories, poems, musical lyrics...

a round object that can be put below a vehicle to allow it to move more easily

a kind of boat that uses the power of wind to move

large rectangular step temples

objects that are made to create beautiful sounds

putting marks on paper or tablets to create words, sentences and ideas

a tool to help farmers separate soil and plant seeds