What were the contributions of the inca empire

The Inca empire was known for advances that bettered their community and kept balance from within. Some of the things that empires like the Inca used we still may use today.

The Inca had very advanced road systems that they used very frequently. These roads were used primarily for communication and trading goods. Communication, as you can imagine, was very hard back in those days. There was no phone or barely a good mail system, so if someone you knew lived far away, it would be very hard to keep in touch. There were certain message carriers, that would carry messages down these roads to different people.

The Inca also had a very complex government and taxing system. It is very hard to believe that civilizations so far back in time could keep track of things such as government and taxing, even though they didn't keep any written records or anything like we do today. The Inca is known for its complex, advanced, and well done government. This government was called the "Tawantinsuyu" and had numerous people keeping watch over the civilians and how much they paid in taxes, but had one ruler among everyone.

Empires, such as the Inca empire, had to do with many of our advances today and it is astonishing how much they accomplished back in that time.

the answer should be a. the sui empire, the tang empire extended from korea in the west to manchuria in the east.