The Separate but Equal doctrine was eventually overturned by the U.S. Supreme Court in the case of Brown v. Board of Education in 1954, but African Americans are still not equal; poorer services and restrictions on voting rights still limit them throughout the United States, and they still are not granted more political and social power than before.
Minimum / standard bedroom size (twin/single) by code. I'll start by saying that most building codes (and as it happens, the UK housing act) require a minimum floor area of 70 square foot (eg 7 x 10ft bedroom) with a ceiling height of 7ft 6ins of ceiling height for a room to be 'habitable'.
76 x 190 cm / 30 x 75 / 2'6 x 6'3. A standard small single bed is the same length as a single mattress, but is 6 inches narrower, measuring 2 feet 6 inches wide (75cm). This is a popular size when trying to save space in a smaller room or for toddlers moving from a cot bed.