Problem: Background: Alaska Natives are indigenous peoples of Alaska, United States: Inupiat, Yupik, Aleut, Eyak, Tlingit, Haida, Tsimshian, and a number of Northern Athabaskan cultures. They are often defined by their language groups. Many Alaska Natives are enrolled in federally recognized Alaska Native tribal entities, who in turn belong to 13 Alaska Native Regional Corporations, who administer land and financial claims. Ancestors of the Alaska Natives are known to have migrated into the area thousands of years ago, in at least two different waves.
Context: In 1971 the United States Congress passed the Alaska Native Claims Settlement Act (ANCSA), which settled land and financial claims for lands and resources which the peoples had lost to European Americans. It provided for the establishment of 13 Alaska Native Regional Corporations to administer those claims. Similar to the separately defined status of the Canadian Inuit and First Nations in Canada, which are recognized as distinct peoples, in the United States, Alaska Natives are in some respects treated separately by the government from other Native Americans in the United States. This is in part related to their interactions with the US government in a different historic period than indigenous peoples in the colonies and early federal period. Europeans and Americans did not have sustained encounters with the Alaska Natives until the late nineteenth and early twentieth centuries, when many were attracted to the region in gold rushes. The Alaska Natives were not allotted individual title in severalty to land under the Dawes Act of 1887 but were instead treated under the Alaska Native Allotment Act of 1906. It was repealed in 1971, following ANSCA, at which time reservations were ended. Another characteristic difference is that Alaska Native tribal governments do not have the power to collect taxes for business transacted on tribal land, per the United States Supreme Court decision in Alaska v. Native Village of Venetie Tribal Government (1998). Except for the Tsimshian, Alaska Natives no longer hold reservations but do control some lands. Under the Marine Mammal Protection Act of 1972, Alaska Natives are reserved the right to harvest whales and other marine mammals.
Question: Did they live on reservations?
Answer: It was repealed in 1971, following ANSCA, at which time reservations were ended.

IN: O'Keeffe was born on November 15, 1887, in a farmhouse located at 2405 Hwy T in the town of Sun Prairie, Wisconsin. Her parents, Francis Calyxtus O'Keeffe and Ida (Totto) O'Keeffe, were dairy farmers. Her father was of Irish descent. Her maternal grandfather George Victor Totto, for whom O'Keeffe was named, was a Hungarian count who came to the United States in 1848.

O'Keeffe then spent part of nearly every year working in New Mexico. She collected rocks and bones from the desert floor and made them and the distinctive architectural and landscape forms of the area subjects in her work. Known as a loner, O'Keeffe explored the land she loved often in her Ford Model A, which she purchased and learned to drive in 1929. She often talked about her fondness for Ghost Ranch and Northern New Mexico, as in 1943, when she explained: "Such a beautiful, untouched lonely feeling place, such a fine part of what I call the 'Faraway'. It is a place I have painted before ... even now I must do it again." Due to exhaustion and poor health, she did not work from late 1932 until about the mid-1930s. She was a popular and reputed artist. She received a number of commissions and her works were exhibited in New York and other places. In 1936, she completed what would become one of her most well-known paintings, Summer Days, in 1936. It depicted a desert scene with a deer skull with vibrant wildflowers. Resembling Ram's Head with Hollyhock, it depicted the skull floating above the horizon. In 1938, the advertising agency N. W. Ayer & Son approached O'Keeffe about creating two paintings for the Hawaiian Pineapple Company (now Dole Food Company) to use in their advertising. Other artists who produced paintings of Hawaii for the Hawaiian Pineapple Company's advertising include Lloyd Sexton, Jr., Millard Sheets, Yasuo Kuniyoshi, Isamu Noguchi, and Miguel Covarrubias. The offer came at a critical time in O'Keeffe's life: she was 51, and her career seemed to be stalling (critics were calling her focus on New Mexico limited, and branding her desert images "a kind of mass production"). She arrived in Honolulu February 8, 1939 aboard the SS Lurline, and spent nine weeks in Oahu, Maui, Kauai, and the island of Hawaii. By far the most productive and vivid period was on Maui, where she was given complete freedom to explore and paint. She painted flowers, landscapes, and traditional Hawaiian fishhooks. Back in New York, O'Keeffe completed a series of 20 sensual, verdant paintings. However, she did not paint the requested pineapple until the Hawaiian Pineapple Company sent a plant to her New York studio. During the 1940s O'Keeffe had two one-woman retrospectives, the first at the Art Institute of Chicago (1943). Her second was in 1946, when she was the first woman artist to have a retrospective at the Museum of Modern Art (MoMA) in Manhattan. Whitney Museum of American Art began an effort to create the first catalogue of her work in the mid-1940s. In the 1940s, O'Keeffe made an extensive series of paintings of what is called the "Black Place", about 150 miles west of her Ghost Ranch house. O'Keeffe said that the Black Place resembled "a mile of elephants with gray hills and white sand at their feet." She made paintings of the "White Place", a white rock formation located near her Abiquiu house.

any intresting thing about the article

OUT: In the 1940s, O'Keeffe made an extensive series of paintings of what is called the "Black Place", about 150 miles west of her Ghost Ranch house.

Background: Ambrose was born in Lovington, Illinois, to Rosepha Trippe Ambrose and Stephen Hedges Ambrose. His father was a physician who served in the U.S. Navy during World War II.
Context: Ambrose was the lone historian featured in the 1973-74 ITV television series, The World at War, which detailed the history of World War II. He served as the historical consultant for the movie Saving Private Ryan. Tom Hanks, who starred in the movie, said he "pored over D-Day" and Band of Brothers in researching his role. Hanks also credited Ambrose's books with providing extensive detail, particularly regarding D-Day landings. The HBO mini-series, Band of Brothers (2001), for which he was an executive producer, helped sustain the fresh interest in World War II that had been stimulated by the 50th anniversary of D-Day in 1994 and the 60th anniversary in 2004. Ambrose served as executive producer for Price for Peace, a documentary concerning the war in the Pacific theater during World War II, and for Moments of Truth, a TV documentary containing interviews with World War II veterans. In addition, Ambrose served as a commentator for Lewis & Clark: The Journey of the Corps of Discovery, a documentary by Ken Burns. He provided commentary in twenty made-for TV documentaries, covering diverse topics, such as World War II, Lewis & Clark, and America's prominence in the 20th century. He also appeared as a guest on numerous TV programs or stations, including The Charlie Rose Show, C-Span programming, CNN programming, NBC's Today Show, CNBC's Hardball, and various programming on The History Channel and the National Geographic Channel. Ambrose's association with National Geographic stemmed, in part, from his designation as an Explorer-in-Residence by the Society. In addition to his academic work and publishing, Ambrose operated a historical tour business, acting as a tour guide to European locales of World War II. Also, he served on the board of directors for American Rivers and was a member of the Lewis and Clark Bicentennial Council.
Question: What other activities did he participate in?
Answer:
Ambrose operated a historical tour business,