Context: Windows in all types of buildings were large and regularly placed on a grid; this was partly to minimize window tax, which was in force throughout the period in the United Kingdom. Some windows were subsequently bricked-in. Their height increasingly varied between the floors, and they increasingly began below waist-height in the main rooms, making a small balcony desirable. Before this the internal plan and function of the rooms can generally not be deduced from the outside. To open these large windows the sash window, already developed by the 1670s, became very widespread. Corridor plans became universal inside larger houses.

Question: What tax was in force throughout the United Kingdom during this time?
Answer: window tax

Question: When was the sash window developed?
Answer: the 1670s

Question: What plans became universal inside larger houses?
Answer: Corridor plans

Question: What cannot be generally deduced from the outside?
Answer: the internal plan and function of the rooms

Question: What aspect of windows generally varied between floors?
Answer: Their height

Question: What tax was maximized by building large and regularly spaced windows
Answer: Unanswerable

Question: What increasingly began above waist height in the main rooms?
Answer: Unanswerable

Question: Before this. What could generally be deduced from the outside
Answer: Unanswerable

Question: What plans were not universal inside large houses?
Answer: Unanswerable

Question: What type of window was required before 1670?
Answer: Unanswerable