Question:
Andriana refers to both the noble class and a title of nobility in Madagascar. Historically, many Malagasy ethnic groups lived in highly stratified caste-based social orders in which the andriana were the highest strata. They were above the Hova (free commoner castes) and Andevo (slaves). The Andriana and the Hova were a part of Fotsy, while the Andevo were Mainty in local terminology.
Austronesian people started settling in Madagascar between 200 to 500 CE. They arrived by boats and were from various southeast Asian groups. African slaves were brought to the island's coasts between the 13th and the 18th centuries. The Portuguese traders were the first Europeans to arrive in the 15th century, followed by other European powers. This influx of diverse people led to various Malagasy sub-ethnicities in the mid-2nd millennium. The Merina were probably the early arrivals, though this is uncertain and other ethnic groups on Madagascar consider them relative newcomers to the island. The Merina people's culture likely mixed and merged with the Madagascar natives named Vazimba about whom little is known. According to the island's oral traditions, the "most Austronesian looking" Merina people reached the interior of the island in the 15th century and established their society there because of wars and migrant pressure at the coast. Merina people were settled in the central Madagascar, formed one of the three major kingdoms on the island by the 18th century - the other two being Swahili-Arab influenced Sakalava kingdom on the west-northwest and Austronesian Betsimisaraka kingdom on the east-northeast. The term Hova originally applied to all members of the Merina people who arrived in the central highlands around the 15th century and absorbed the existing population of Vazimba. Andriamanelo (1540-1575) consolidated the power of the Hova when he united many of the Hova chiefdoms around Antananarivo under his rule. The term Hova remained in use through the 20th century, though some foreigners transliterated that word to be Ankova, and increasingly used since the 19th century. In and after the 16th century, slaves were brought into Madagascar's various kingdoms, and social strata emerged in Merina kingdom. The Hova emerged as the free commoners caste below the nobles hierarchy. During the rule of King Andriamanelo, a subset of Hova related to the king by blood came under the title Andriana. The social structure of the new kingdom became further defined under his son Ralambo (1575-1612), who further subdivided the Andriana into four ranks, and eventually six sub-castes by King Andriamasinavalona (1675-1710).
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What were the four ranks called?

Answer:

Question:
Sitting Bull was born on land later included in the Dakota Territory. In 2007, Sitting Bull's great-grandson asserted from family oral tradition that Sitting Bull was born along the Yellowstone River, south of present-day Miles City, Montana. He was named Jumping Badger at birth, and nicknamed Hunkesi, or "Slow," said to describe his careful and unhurried nature. When the boy was fourteen years old he accompanied a group of Lakota warriors (which included his father and his uncle Four Horns) in a raiding party to take horses from a camp of Crow warriors.
From 1866 to 1868, Red Cloud as a leader of the Oglala Lakota fought against US forces, attacking their forts in an effort to keep control of the Powder River Country of Montana. In support of him, Sitting Bull led numerous war parties against Fort Berthold, Fort Stevenson, and Fort Buford and their environs from 1865 through 1868. Sitting Bull also made guerrilla attacks on emigrant parties and smaller forts throughout the upper Missouri River region. By early 1868, the U.S. government desired a peaceful settlement to Red Cloud's War. It agreed to Red Cloud's demands that the US abandon forts Phil Kearny and C.F. Smith. Gall of the Hunkpapa (among other representatives of the Hunkpapa, Blackfeet, and Yankton Dakota) signed a form of the Treaty of Fort Laramie on July 2, 1868 at Fort Rice (near Bismarck, North Dakota). Sitting Bull did not agree to the treaty. He told the Jesuit missionary, Pierre Jean De Smet, who sought him out on behalf of the government: "I wish all to know that I do not propose to sell any part of my country." He continued his hit-and-run attacks on forts in the upper Missouri area throughout the late 1860s and early 1870s. The events of 1866-1868 mark a historically debated period of Sitting Bull's life. According to historian Stanley Vestal, who conducted interviews with surviving Hunkpapa in 1930, Sitting Bull was made "Supreme Chief of the whole Sioux Nation" at this time. Later historians and ethnologists have refuted this concept of authority, as the Lakota society was highly decentralized. Lakota bands and their elders made individual decisions, including whether to wage war.
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Was there any specific land areas they were fighting for?

Answer:
keep control of the Powder River Country of Montana.