What can you tell me about its history? 
 You're so welcome! 
 Wow, didn't know that. What can you tell me about Berlin's government? 
 Interesting. Can you tell me something else about its history? 
 The Industrial Revolution transformed Berlin during the 19th century, the cit's economy and population expanded dramatically.
The Industrial Revolution transformed Berlin during the 19th century, the cit's economy and population expanded dramatically.