question: OPTIONS:
- yes
- no
They invented and developed arithmetic by using several different number systems including a mixed radix system with an alternating base 10 and base 6.
Sumerians used number systems which included what alternating bases?

answer: yes

question: OPTIONS:
- yes
- no
In the Iron Age
The period of time from 1200 to 1000 BCE is known as what?

answer: yes

question: OPTIONS:
- yes
- no
Social dancing became more widespread, so musical forms appropriate to accompanying dance began to standardize.
What era was from 1400 to 1600?

answer: no

question: OPTIONS:
- yes
- no
When Russia conquered these groups and gained possession of southern Ukraine, known as New Russia during Russian imperial times, the Ottoman Empire lost its buffer zone against Russian expansion, and Russia and the Ottoman Empire fell into direct conflict.
For 200 years, Russia been expanding across what area?

answer:
no