ANSWER: 70,000, everything is added including percentages, i think i did this right.
In understanding the central idea or the main idea of a particular passage. You must take out the hard terms and look for their meanings. It is one way of understanding at the same time learning with the passage. It is also advisable to stay focus on what you are reading to easily understand it.
A.They explain how old maps were inaccurate
The sentence "Moreover, it is probably just as valuable or more valuable to us now, than it was in the ancient past".
