Question:  Pushing the Bear explores the lives of the Cherokee as they are forced to leave their land along what series carried out by various government authorities?

Context paragraphs:
Trail of Tears: The Trail of Tears was a series of forced removals of Native American nations from their ancestral homelands in the Southeastern United States to an area west of the Mississippi River that had been designated as Indian Territory.  The forced relocations were carried out by various government authorities following the passage of the Indian Removal Act in 1830.  The relocated people suffered from exposure, disease, and starvation while en route, and more than four thousand died before reaching their various destinations.  The removal included members of the Cherokee, Muscogee (Creek), Seminole, Chickasaw, and Choctaw nations.  The phrase "Trail of Tears" originated from a description of the removal of the Cherokee Nation in 1838.

Zhang Kai (lawyer): Zhang Kai (Chinese: 张凯; pinyin: Zhāng Kǎi) is a human rights lawyer known for defending churches in China that were being forced to remove their crosses and crucifixes.  He is also known for representing or campaigning on behalf of the disadvantaged, such as Feng Jianmei, a woman forced by government authorities to have an abortion in 2012.

Pushing the Bear: Pushing the Bear is a historical novel by Diane Glancy which explores the lives of the Cherokee in 1838/39 during their forced removal from their land along the Trail of Tears in the United States.  The book was published in 1996 by Harcourt.

Highways in Australia: Highways in Australia are generally high capacity roads managed by state and territory government agencies, though Australia's federal government contributes funding for important links between capital cities and major regional centres.  Prior to European settlement, the earliest needs for trade and travel were met by narrow bush tracks, used by tribes of Indigenous Australians.  The formal construction of roads began in 1788, after the founding of the colony of New South Wales, and a network of three major roads across the colony emerged by the 1820s.  Similar road networks were established in the other colonies of Australia.  Road construction programs in the early 19th century were generally underfunded, as they were dependent on government budgets, loans, and tolls; while there was a huge increase in road usage, due to the Australian gold rushes.  Local government authorities, often known as Road Boards, were therefore established to be primarily responsible for funding and undertaking road construction and maintenance.  The early 1900s saw both the increasingly widespread use of motorised transportation, and the creation of state road authorities in each state, between 1913 and 1926.  These authorities managed each state's road network, with the main arterial roads controlled and maintained by the state, and other roads remaining the responsibility of local governments.  The federal government became involved in road funding in the 1920s, distributing funding to the states.  The depression of the 1930s slowed the funding and development of the major road network until the onset on World War II.  Supply roads leading to the north of the country were considered vital, resulting in the construction of Barkly, Stuart, and Eyre Highways.

Authoritarian literature: Authoritarian literature is a term used by John Gardner to designate the body of literature written by persons living under an authoritarian governmental regime.  Literary works produced in these regimes share common characteristics that make the designation useful.  Authoritarian regimes revere their leaders, who historically were typically referred to as kings, along with advisors to the king.  These leaders were considered innately better than ordinary people.  The authoritarian leader, and his approved circle, if not directly writing about a subject themselves, were the only ones who could designate, approve, and sanction writers as acceptable authorities.  Government authorities also financially supported writers under a patronage system.  The writers in such a system therefore must necessarily be careful to ensure the composition of their work met (or would meet) the approval of authorities.  Failure to comply risked official warnings, loss of governmental sanction, and sometimes even imprisonment or loss of life.

Forced evictions in China: Forced eviction in the People's Republic of China refers to the practice of involuntary land requisitions from the citizenry, typically in order to make room for development projects.  In many instances, government authorities working in collusion with private developers seize land from villagers, often with little to no compensation.  Forced evictions are particularly common in rural areas, and are a major source of unrest and public protest.  By some estimates, up to 65 percent of the 180,000 annual "mass incidents" in China stem from grievances over forced evictions.  Citizens who resist or protest the evictions have reportedly been subjected to harassment, beatings, or detention.

Lev Tahor: Lev Tahor (Hebrew: לב טהור‎ ‎ - pure heart) is a Haredi Jewish anti-Zionist religious sect, formerly headed by Shlomo Helbrans, which is known to follow an unusually austere form of Jewish practice.  The group generally follows a strict version of halakha, including its own unique practices such as lengthy prayer sessions, arranged marriages between teenagers, and black, head-to-toe coverings for women.  The group has moved frequently, with the majority of its members most recently being forced to leave in August 2014 from the Guatemala town of San Juan La Laguna after fleeing trouble with government authorities in the provinces of Ontario and Quebec, Canada.

Zamzamin Ampatuan: Datu Zamzamin Ampatuan is a career bureaucrat in the Philippines.  He is a descendant of Shariff Ampatuan, grandson of Syedona Mustafa, a Sufi missionary, which propagated moderate Islam in the Upper Cotabato Valley of Southern Philippines.  However rooted in spiritual and ethical traditions, the public image of the Ampatuan clan, to which Datu Zamzamin belonged, was tainted by the infamous 11/23 Massacre at Masalay, Ampatuan, Maguindanao.  Authorities pointed to Andal Ampatuan Jr. a.ka.  "Datu Unsay", as the culprit.  Datu Unsay's brothers and father, Datu Andal Ampatuan, were detained when Martial Law briefly took effect in Maguindanao as an aftermath of the 11/23 Massacre.  Datu Zamzamin have helped tone down the tension by helping convince Datu Unsay to submit to due process of law.  He also provided advise to government authorities on how to handle the post-massacre situation to ease the impact on the lives of ordinary people in Maguindanao.

Yitong Law Firm: Yitong Law Firm (忆通) is a law firm in the People's Republic of China engaged in defense of human rights.  Its clients include Hu Jia and Chen Guangcheng.  In February 2009 Chinese authorities announced that the firm would be shut down for six months, ostensibly because an unlicensed lawyer was practicing there.  The accused lawyer, Li Subin, was a former deputy director of the firm who had been denied the chance to renew his professional license by the provincial authorities in Henan after he had successfully sued the Henan judicial bureau for overcharging.  The managing partner of the firm, Li Jinsong, denied that Li Subin had engaged in the practice of law claiming he was only engaged in administrative duties and charged that the government authorities "are distorting facts ... to get revenge" for the way the firm's lawyers have criticized or defied government agencies.

National Emergency Management Agency: The National Emergency Management Agency (NEMA; Korean: 소방방재청, 消防防災廳) was an agency of South Korea, initially created by Enactment of the "Act on Promotion of Fire Fighting Industry" of 2008 and ceased control on 19 November 2014 as the Ministry of Public Safety and Security was founded at the same day on the incident of the MV "Sewol" ferry disaster.  The agency's primary purpose is to coordinate the response to any disaster that has occurred in South Korea which overwhelms the resources of local government authorities.  The disaster management system of Korea goes back to "Buyeok" (compulsory service) in the era of the Three Kingdoms, which was succeeded by the Hyangyak in the Joseon Dynasty and then by the ‘Civil Defense Basic Law’ enacted in 1975 after independence.  The NEMA, whose predecessor is the ‘Headquarters of Civil Defense and Disaster Management’ under the control of the Ministry of Government Administration and Home Affairs, was opened on June 1, 2004 for the purpose of protecting the lives and property of the people from the large-scale disasters that have occurred repeatedly every year since 1990s.  The NEMA consists of 1 officer, 3 bureaus, 19 divisions and 4 affiliated organizations.  A total of 435 people (267 for the main office and 168 for the affiliated organizations) work for the NEMA.  Through the execution of 12 laws including the Disaster and Safety Management Basic Law, it is taking the lead in the national disaster management work of protecting the lives and property of the people.

Supporting paragraphs: Pushing the Bear Trail of Tears
Answer: Trail of Tears