Question: South Improvement Company was one part of which oil magnate's attempts to control this industry?

full_context: Document 1: John Dustin Archbold: John Dustin Archbold (July 26, 1848 in Leesburg, Ohio – December 6, 1916 in Tarrytown, New York) was an American capitalist and one of the United States' earliest oil refiners. His small oil company was bought out by John D Rockefeller's Standard Oil Company. Archbold rose rapidly at Standard Oil, handling many of the complex secret negotiations over the years. By 1882 he was Rockefeller's closest associate, and typically acted as the company's primary spokesman. Rockefeller after 1896 left business matters to Archbold while he pursued his philanthropy; as vice president Archbold effectively ran Standard Oil until his death in 1916. Inspired by Rockefeller's policies, Archbold's main goals were stabilization, efficiency, and minimizing waste in refining and distributing petroleum products. The company was broken up by the Supreme Court in 1911 into three dozen smaller operations, Archbold became president of the largest one, Standard Oil of New Jersey.
Document 2: Rockefeller family: The Rockefeller family ( ) is an American industrial, political, and banking family that made one of the world's largest fortunes in the oil business during the late 19th and early 20th centuries, with John D. Rockefeller and his brother William Rockefeller primarily through Standard Oil. The family is also known for its long association with and control of Chase Manhattan Bank. They are considered to be one of the most powerful families, if not the most powerful family, in the history of the United States.
Document 3: David Rockefeller: David Rockefeller (June 12, 1915 – March 20, 2017) was an American banker who was chairman and chief executive of Chase Manhattan Corporation. He was the oldest living member of the Rockefeller family and family patriarch from August 2004 until his death in March 2017. Rockefeller was a son of John D. Rockefeller Jr. and Abby Aldrich Rockefeller, and a grandson of John D. Rockefeller and Laura Spelman Rockefeller.
Document 4: Forest Hill, Ohio: Forest Hill is an historic neighborhood spanning parts of Cleveland Heights and East Cleveland, Ohio, and is bordered to the north by Glynn Road, the south by Mayfield Road, by Lee Boulevard to the west and North Taylor Road to the east. Forest Hill was once the beloved summer home of oil magnate John D. Rockefeller and his family. John D. Rockefeller, Jr. purchased the estate from his father in 1923 and, with New York City architect Andrew J. Thomas, planned an upscale residential and commercial development featuring distinctive French Norman style architecture. Although the Great Depression forced Rockefeller to suspend operations, following World War II others were drawn to Forest Hill to build comfortable colonial and contemporary ranch homes on the remaining open land. Design principles of the Rockefeller-Thomas plan were extended to the later development and today Forest Hill is a rich tapestry of people, homes and gardens.
Document 5: John D. Rockefeller: John Davison Rockefeller Sr. (July 8, 1839 – May 23, 1937) was an American oil industry business magnate and philanthropist. Widely considered the wealthiest American of all time and the richest person in modern history, Rockefeller was born into a large family in upstate New York and was shaped by his con man father and religious mother. His family moved several times before eventually settling in Cleveland, Ohio.
Document 6: Pan American Petroleum and Transport Company: The Pan American Petroleum and Transport Company (PAT) was an oil company founded in 1916 by the American oil tycoon Edward L. Doheny after he had made a huge oil strike in Mexico. Pan American profited from fuel demand during World War I, and from the subsequent growth in use of automobiles. For several years Pan American was the largest American oil company, with holdings in the United States, Mexico, Colombia and Venezuela. In 1924 Pan American was involved in the Teapot Dome scandal over irregularities in the award of a U.S. government oil concession. Standard Oil of Indiana obtained a majority stake in 1925. The company sold its foreign properties to Standard Oil of New Jersey in 1932. What was left of Pan American was merged with Standard Oil of Indiana in 1954 to form Amoco.
Document 7: Carnegie Steel Company: Carnegie Steel Company was a steel producing company primarily created by Andrew Carnegie and several close associates, in order to manage businesses at steel mills in the Pittsburgh, Pennsylvania area in the late 19th century. The company formed in 1892 and was subsequently sold in 1901 in one of the largest ever business transactions of the early 20th century, to become the major component of the United States Steel Corporation. The subsequent sale made Carnegie one of the richest men in history.
Document 8: Standard Oil of Iowa: Standard Oil Company of Iowa was created in 1885 as a subsidiary of the Standard Oil Trust to handle marketing along the Pacific Coast states of Idaho, Oregon, Washington, California, and Arizona. Though named for the midwestern state, it never included Iowa as one of its primary marketing areas. A prior company named Standard Oil of California had been formed in 1877, and was not associated with the Standard Oil Trust. In 1906, Standard Oil of Iowa was dissolved and its assets handed over to a new Standard Oil of California, later Chevron Oil Company, and now the Chevron Corporation. Standard Oil Company of Iowa is thus the original company that is now Chevron.
Document 9: Alida Rockefeller Messinger: Alida Ferry Rockefeller (born 1948) is an American philanthropist. She is the youngest daughter of John Davison Rockefeller III (1906–1978) and Blanchette Ferry Hooker (1909–1992), and a fourth-generation member of the Rockefeller family. Her brother is former Senator John Davison "Jay" Rockefeller IV (born 1937). According to an account in "The New York Times", Alida was only five years old when her father began to teach her about philanthropy. She said:
Document 10: John D. Rockefeller III: John Davison Rockefeller III (March 21, 1906 – July 10, 1978) was a philanthropist and third-generation member of the prominent Rockefeller family. He was the eldest son of philanthropists John D. Rockefeller Jr. and Abby Aldrich Rockefeller. His siblings were Abby, Nelson, Laurance, Winthrop, and David.
Document 11: ExxonMobil: Exxon Mobil Corporation is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller's Standard Oil Company, and was formed on November 30, 1999 by the merger of Exxon (formerly Standard Oil Company of New Jersey) and Mobil (formerly the Standard Oil Company of New York).
Document 12: Rockefeller Brothers Fund: The Rockefeller Brothers Fund (RBF) is a philanthropic foundation created and run by members of the Rockefeller family. It was founded in New York City in 1940 as the primary philanthropic vehicle for the five third-generation Rockefeller brothers: John D. Rockefeller III, Nelson, Laurance, Winthrop and David. It is distinct from the Rockefeller Foundation. The Rockefellers are an industrial, political, and banking family that made one of the world's largest fortunes in the oil business during the late 19th and early 20th centuries.
Document 13: South Improvement Company: The South Improvement Company was a Pennsylvania corporation in 1871-1872. It was created by major railroad interests, but was widely seen as part of John D. Rockefeller's early efforts to organize and control the oil and natural gas industries in the United States which eventually became Standard Oil. Although it lasted less than a year and never shipped any oil, the South Improvement Company scheme caused widespread attention to be focused on the relationships between big railroads and big businesses which wanted and demanded favorable treatment.
Document 14: Northern Securities Company: The Northern Securities Company was a short-lived American railroad trust formed in 1901 by E. H. Harriman, James J. Hill, J.P. Morgan and their associates. The company controlled the Northern Pacific Railway; Great Northern Railway; Chicago, Burlington and Quincy Railroad; and other associated lines. It was capitalized at $400 million, and Hill served as president.
Document 15: Rockefeller, Andrews &amp; Flagler: Rockefeller, Andrews & Flagler was a business concern formed in 1867 in Cleveland, Ohio which was a predecessor of the Standard Oil Company. The principals and namesakes were John D. Rockefeller, William Rockefeller, Samuel Andrews, and Henry M. Flagler. Flagler’s step-brother Stephen V. Harkness made substantial investments, but was a silent partner and did not take an active role in running the business but he was actually the second largest stockholder next to JD Rockefeller.
ground_truth: John Davison Rockefeller Sr.