Problem: European colonialism in the Sahara began in the 19th century. France conquered the regency of Algiers from the Ottomans in 1830, and French rule spread south from Algeria and eastwards from Senegal into the upper Niger to include present-day Algeria, Chad, Mali then French Sudan including Timbuktu, Mauritania, Morocco (1912), Niger, and Tunisia (1881). By the beginning of the 20th century, the trans-Saharan trade had clearly declined because goods were moved through more modern and efficient means, such as airplanes, rather than across the desert.
What year did France conquer Niger?
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Answer: unanswerable

Problem: With roots dating back to 1909 in the university's School of Social Economy, the George Warren Brown School of Social Work (commonly called the Brown School or Brown) was founded in 1925. Brown's academic degree offerings include a Master of Social Work (MSW), a Master of Public Health (MPH), a PhD in Social Work, and a PhD in Public Health Sciences. It is currently ranked first among Master of Social Work programs in the United States. The school was endowed by Bettie Bofinger Brown and named for her husband, George Warren Brown, a St. Louis philanthropist and co-founder of the Brown Shoe Company. The school was the first in the country to have a building for the purpose of social work education, and it is also a founding member of the Association of Schools and Programs of Public Health. The school is housed within Brown and Goldfarb Halls, but a third building expansion is currently in progress and slated to be completed in summer 2015. The new building, adjacent to Brown and Goldfarb Halls, targets LEED Gold certification and will add approximately 105,000 square feet, more than doubling the school's teaching, research, and program space.
When was the George Warren Brown School of Social Work founded?
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Answer: 1925

Problem: The original early 19th-century interior designs, many of which survive, include widespread use of brightly coloured scagliola and blue and pink lapis, on the advice of Sir Charles Long. King Edward VII oversaw a partial redecoration in a Belle Epoque cream and gold colour scheme. Many smaller reception rooms are furnished in the Chinese regency style with furniture and fittings brought from the Royal Pavilion at Brighton and from Carlton House. The palace has 775 rooms, and the garden is the largest private garden in London. The state rooms, used for official and state entertaining, are open to the public each year for most of August and September, and on selected days in winter and spring.
What original colors from the 19th century were used on the advice of Sir Charles Long?
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Answer:
brightly coloured scagliola and blue and pink lapis