Egyptians
Explanation:
because over 4,000 years ago there was the Great Pyramids built
The way that Constantinople's Church of Hagia Sophia demonstrate how the Byzantine Empire blended with the old Roman Empire would be: <span>The church combined both Greek and Roman architecture, and became a melting pot where Eastern and Western cultures came together.
This can be seen from the grand buildings of their church that displayed beautiful harmonization of both eastern and western arts and culture</span>
No i can not think of another incident
So what you want to do is add 30 + 80 and 40 + 60 until you get the same amount so 30 + 80 = 110 and 40 + 60 = 100 so that is 1 month so now we add again so 30 + 110 is 140 and 100 + 40 =140 so that is 2 months so it would take 2 months for them to have the same amount of money.