Well, it is like the Biblical story about the Tower of Babylon - in the beginning, there was only one language and all the people in the world spoke it. However, because of many disputes and quarrels, they all separated and created numerous new languages. The same thing happened in the real world (if you don't believe in what the Bible says) - there used to be Proto-Indo-European language, but over time, it developed many new languages as people grew apart and created new nations.
Answer:D
Explanation:
As we see on the graph, near the year 1600 the population falls a bit.
1600-1800 recieved the most change in relation to the previous years.
That is also when industrialization happened, so it makes sense why the population would spike.