I want to know the answer to the following question:
Brownstone rowhouse construction is most often associated with the period beginning in 1870 and ending in what year?
All the background I'm provided with is that "The character of New York's large residential districts is often defined by the elegant brownstone rowhouses and townhouses and shabby tenements that were built during a period of rapid expansion from 1870 to 1930.". Is that enough to answer the question?
Answer: yes