Who did Anna Timiryova marry after Alexander Kolchak was executed?
Ans: Vsevolod Kniper

James Scott caused the worst American flooding disaster since when?
Ans: 1927

Mont d'Amin is a mountain of a sub-alpine mountain range located north of the Western Alps, and mainly following what border?
Ans: FranceSwitzerland border

Are Lu Xun and W. E. B. Du Bois both writers?
Ans: yes