Question: Ibn al-Sal'us was the chief financial adviser for the sultanate that spanned which realm?

Context paragraphs:
Bernard Bernstein: Bernard Bernstein (30 November 1908 – 6 February 1990) was an American economist and public official.  As a U.S. Army colonel, he served as a financial adviser to General Eisenhower in World War II, and after the war was on the Control Commission for Germany, but was removed when the Morgenthau Plan, with which he was associated, was not adopted.  Additionally, he held multiple offices concurrently.  From 1933 until 1948, he was an Attorney for the U.S. Treasury Department.  From 1942 through 1943, he was a Financial Adviser, North African Economic Control Board.  From 1944 through 1945, he was Director, Finance Division and Director of the Division of Investigation of Cartels and External Assets, U.S. Group Control Commission for Germany.  From 1942 through 1945, he acted as Financial Adviser to Gen. Eisenhower for Civil Affairs and Military Government, European Theater of Operations and MTO.

Jeff Bornstein: Jeffrey "Jeff" S. Bornstein is an American business executive.  He is a senior vice president and chief financial officer for General Electric.  Previously, Bornstein served as chief financial officer of GE Capital and senior vice president of General Electric.  Bornstein joined GE in 1989 with the GE Power Systems’ Financial Management Program.  In 1992, he joined the GE Corporate Audit Staff and then became Executive Audit Manager.  In 1996, he was named Chief Financial Officer for GE Aircraft Engine Services and Vice President in 1998.  In 1999, he was promoted to Chief Financial Officer of GE Plastics and served as their CFO until 2002.  He is on the board of Northeastern University and buildOn.  He has also been involved in a number of youth programs.  He received his B.S. in Business Administration from Northeastern University.

Chief Financial Officers Act: The Chief Financial Officers Act of 1990 (Public Law 101–576), or CFO Act, signed into law by President George H.W. Bush on November 15, 1990, is a United States federal law intended to improve the government's financial management, outlining standards of financial performance and disclosure.  Among other measures, the Office of Management and Budget (OMB) was given greater authority over federal financial management.  For each of 23 federal departments and agencies, the position of chief financial officer was created.  In accordance with the CFO Act, each agency or department vests its financial management functions in its chief financial officer.

Mamluk Sultanate (Cairo): The Mamluk Sultanate (Arabic: سلطنة المماليك‎ ‎ "Salṭanat al-Mamālīk") was a medieval realm spanning Egypt, the Levant, and Hejaz.  It lasted from the overthrow of the Ayyubid dynasty until the Ottoman conquest of Egypt in 1517.  Historians have traditionally broken the era of Mamlūk rule into two periods—one covering 1250–1382, the other, 1382–1517.  Western historians call the former the "Baḥrī" period and the latter the "Burjī" due to the political dominance of the regimes known by these names during the respective eras.  Contemporary Muslim historians refer to the same divisions as the "Turkish" and "Circassian" periods in order to stress the change in the ethnic origins of the majority of Mamlūks.

Ellis Cousens: Ellis E. Cousens (born 1952) is Executive Vice President, Chief Financial Officer and Chief Operations Officer of John Wiley & Sons, Inc., since March 2001.  Previously Senior Vice President, Chief Financial Officer of Bookspan, a Bertelsmann AG and Time Warner Inc. joint venture, from March 2000; Vice President, Finance and Strategic Planning, of Bertelsmann AG from March 1999; Vice President, Chief Financial Officer of BOL.com, a subsidiary of Bertelsmann AG, from August 1998).  Earned a Bachelor's degree from Hunter College, Master of Science from Rensselaer Polytechnic Institute and an MBA in Finance from the Hagan School of Business of Iona College.  Graduated DeWitt Clinton High School, Bronx, NY class of 1970.

Arthur Kade: Arthur Kade (born Arthur Kadyshes American former financial adviser.  Raised by his grandmother in Northeast Philadelphia, he attended college at Temple University.  Upon graduation, he began a career as a financial adviser with American Express Financial Advisers.  In early 2009, he embarked on what he calls "The Journey", the pursuit of his lifelong dream of becoming an actor and model.

Ibn al-Sal'us: Al-Sahib Shams ad-Din Muhammad ibn Uthman ibn Abi al-Raja' al-Tanukhi, better known as Ibn al-Sal'us (died 10 December 1294), was an Arab merchant and the "wazir" (chief financial adviser) of the Mamluk sultan, al-Ashraf Khalil (r. 1290–1293).  Ibn al-Sal'us began his career as a merchant based in Damascus, where he was eventually employed as a deputy "muhtasib" (market inspector).  He gained a good reputation for his efforts at ensuring accountability in Damascene commerce.  He was later appointed chief "muhtasib" in Cairo by Sultan al-Mansur Qalawun in 1290, but was soon after exiled to the Hejaz.  When al-Ashraf Khalil succeeded Qalawun in November 1290, he recalled Ibn al-Sal'us to Cairo and appointed him "wazir".  Ibn al-Sal'us restored the political influence of the office of "wazir" and accompanied al-Ashraf Khalil during military expeditions against the Crusaders and the Armenians.  His arrogance toward senior Mamluk emirs drew their resentment.  In the months following al-Ashraf Khalil's murder, Ibn al-Sal'us was arrested and tortured to death on the orders of his rival, Emir Sanjar al-Shuja'i.

William F. Pounds: William F. Pounds was Dean (from 1966–1980) and is a professor emeritus at the MIT Sloan School of Management.  He was chief financial adviser to the Rockefeller family and an executive in many of their holdings.

Joshua Oigara: Joshua Nyamweya Oigara is the Group Chief Executive Officer of the Kenya Commercial Bank Group.  At age 37, his appointment in November 2012 to replace the outgoing CEO Martin Oduor-Otieno made him the youngest CEO of a publicly traded bank at the NSE.  Prior to his appointment, he served as Chief Financial Officer and Member of the Board of Directors of the Company between January 12, 2012 and January 2013.  He also served as Group Chief Financial Officer at KCB Bank Group for East Africa.  He joined the Bank in November 2011 from Bamburi Cement where he served as Group Financial Director and Chief Financial Officer for the East Africa region.  Oigara holds a Bachelor of Commerce degree from University of Nairobi and Master of Business Administration from Edith Cowan University and a host of other qualifications.

Minister of Steel (India): The Minister of Steel is the head of the Ministry of Steel and one of the cabinet ministers of the Government of India. He is assisted by a Secretary to the Government of India, an Additional Secretary and Financial Adviser to Government of India, 4 Joint Secretaries, a Chief Controller of Accounts also looking after the accounting matters of the Ministry, one Economic Adviser of the rank of Joint Secretary, 6 Directors, 2 Deputy Secretaries, 12 Under Secretaries, One Deputy Director, other Officers and supporting staff and a Technical Wing under the charge of an Industrial Adviser to Government of India.  The current Hon'ble Minister of Steel is Shri Narendra Singh Tomar.

Supporting paragraphs: Ibn al-Sal'us Mamluk Sultanate (Cairo)
Answer: Egypt, the Levant, and Hejaz