Around A.D. 1000, Olof Skötkonung became the first Christian king of which Scandinavian country?

Gambler Arnold "The Brain" Rothstein was accused of masterminding the fixing of which 1919 sporting event? During a 13-day union strike in 1967, Arnold Zenker filled in for which CBS anchorman? Around A.D. 1000, which Norse explorer named part of the North American coast Vinland? Around A.D. 1000, which country was known as Dai Co Viet? Around A.D. 1000, Rajaraja I expanded the Chola Empire by invading which island off India? Around A.D. 1000, the Caliphate of Córdoba controlled much of which European peninsula? Around 1000 B.C., which biblical king captured Jerusalem and made it his capital? In 1054, the Christian church split into the Roman Catholic Church and which other main branch?