Question: When did the first indentured servants came to the country of citizenship of the author of The Everglades: River of Grass?

full_context: Document 1: Everglades National Park: Everglades National Park is a U.S. National Park in Florida that protects the southern 20 percent of the original Everglades. In the United States, it is the largest tropical wilderness, the largest wilderness of any kind east of the Mississippi River, and is visited on average by one million people each year. It is the third - largest national park in the lower 48 states after Death Valley and Yellowstone. It has been declared an International Biosphere Reserve, a World Heritage Site, and a Wetland of International Importance, one of only three locations in the world to appear on all three lists.
Document 2: Marjory Stoneman Douglas: Marjory Stoneman Douglas (April 7, 1890 – May 14, 1998) was an American journalist, author, women's suffrage advocate, and conservationist known for her staunch defense of the Everglades against efforts to drain it and reclaim land for development. Moving to Miami as a young woman to work for "The Miami Herald", she became a freelance writer, producing over one hundred short stories that were published in popular magazines. Her most influential work was the book "" (1947), which redefined the popular conception of the Everglades as a treasured river instead of a worthless swamp. Its impact has been compared to that of Rachel Carson's influential book "Silent Spring" (1962). Her books, stories, and journalism career brought her influence in Miami, enabling her to advance her causes.
Document 3: Everglades Digital Library: The Everglades Digital Library is hosted and supported by the Florida International University Libraries, in collaboration with Everglades National Park, the University of Florida Libraries, and numerous other agencies and research organizations. The Everglades Digital Library is a library with multiple large and growing collections that regularly add new materials, including scientific and technical reports, natural history writings, educational resources, maps, photographs, and additional contextual materials on and relating to the greater Everglades.
Document 4: North Carolina: Most of the English colonists had arrived as indentured servants, hiring themselves out as laborers for a fixed period to pay for their passage. In the early years the line between indentured servants and African slaves or laborers was fluid. Some Africans were allowed to earn their freedom before slavery became a lifelong status. Most of the free colored families formed in North Carolina before the Revolution were descended from unions or marriages between free white women and enslaved or free African or African-American men. Because the mothers were free, their children were born free. Many had migrated or were descendants of migrants from colonial Virginia. As the flow of indentured laborers to the colony decreased with improving economic conditions in Great Britain, planters imported more slaves, and the state's legal delineations between free and slave status tightened, effectively hardening the latter into a racial caste. The economy's growth and prosperity was based on slave labor, devoted first to the production of tobacco.
Document 5: Child labour: Systematic use of child labour was common place in the colonies of European powers between 1650 and 1950. In Africa, colonial administrators encouraged traditional kin-ordered modes of production, that is hiring a household for work not just the adults. Millions of children worked in colonial agricultural plantations, mines and domestic service industries. Sophisticated schemes were promulgated where children in these colonies between the ages of 5–14 were hired as an apprentice without pay in exchange for learning a craft. A system of Pauper Apprenticeship came into practice in the 19th century where the colonial master neither needed the native parents' nor child's approval to assign a child to labour, away from parents, at a distant farm owned by a different colonial master. Other schemes included 'earn-and-learn' programs where children would work and thereby learn. Britain for example passed a law, the so-called Masters and Servants Act of 1899, followed by Tax and Pass Law, to encourage child labour in colonies particularly in Africa. These laws offered the native people the legal ownership to some of the native land in exchange for making labour of wife and children available to colonial government's needs such as in farms and as picannins.
Document 6: John Muir: John Muir (/ mjʊər /; April 21, 1838 -- December 24, 1914) also known as ``John of the Mountains '', was a Scottish - American naturalist, author, environmental philosopher, glaciologist and early advocate for the preservation of wilderness in the United States. His letters, essays, and books describing his adventures in nature, especially in the Sierra Nevada, have been read by millions. His activism has helped to preserve the Yosemite Valley, Sequoia National Park and many other wilderness areas. The Sierra Club, which he founded, is a prominent American conservation organization. The 211 - mile (340 km) John Muir Trail, a hiking trail in the Sierra Nevada, was named in his honor. Other such places include Muir Woods National Monument, Muir Beach, John Muir College, Mount Muir, Camp Muir, Muir Grove, and Muir Glacier. In Scotland, the John Muir Way, a 130 - mile - long route, was named in honor of him.
Document 7: Indentured servitude: Between one - half and two - thirds of white immigrants to the American colonies between the 1630s and American Revolution had come under indentures. However, while almost half the European immigrants to the Thirteen Colonies were indentured servants, at any one time they were outnumbered by workers who had never been indentured, or whose indenture had expired, and thus free wage labor was the more prevalent for Europeans in the colonies. Indentured people were numerically important mostly in the region from Virginia north to New Jersey. Other colonies saw far fewer of them. The total number of European immigrants to all 13 colonies before 1775 was about 500,000; of these 55,000 were involuntary prisoners. Of the 450,000 or so European arrivals who came voluntarily, Tomlins estimates that 48% were indentured. About 75% of these were under the age of 25. The age of adulthood for men was 24 years (not 21); those over 24 generally came on contracts lasting about 3 years. Regarding the children who came, Gary Nash reports that ``many of the servants were actually nephews, nieces, cousins and children of friends of emigrating Englishmen, who paid their passage in return for their labor once in America. ''
Document 8: Rachel Carson: Rachel Louise Carson (May 27, 1907 -- April 14, 1964) was an American marine biologist, author, and conservationist whose book Silent Spring and other writings are credited with advancing the global environmental movement.
Document 9: Multiracial Americans: In the colonial years, while conditions were more fluid, white women, indentured servant or free, and African men, servant, slave or free, made unions. Because the women were free, their mixed-race children were born free; they and their descendants formed most of the families of free people of color during the colonial period in Virginia. The scholar Paul Heinegg found that eighty percent of the free people of color in North Carolina in censuses from 1790–1810 could be traced to families free in Virginia in colonial years.
Document 10: Mercedes Sola: Mercedes Sola (1879–1923) was a Puerto Rican writer, educator, and activist for the rights of women. Along with Isabel Andreu de Aguilar (1887–1948) and Ana Roque de Duprey (1853–1933), Sola was a feminist recognized in 1917 for the founding of the Puerto Rican League of Women. Sola, Andreu de Aguilar and Roque de Duprey, along with others, brought about the passage of the country's suffrage bill. She was one of the main architects of the suffragette campaign in Puerto Rico from the 1920s, and was a leader of the Puerto Rican Woman's Suffrage Association. In 1922, she published "Feminismo", in which she demanded the woman's right to vote in the society of his country; it is considered a landmark text in contemporary feminism. She was also co-founder of the feminist magazine "Women of the Twentieth Century", which aimed at defending the rights of women.
Document 11: History of immigration to the United States: The history of immigration to the United States details the movement of people to the United States starting with the first European settlements from around 1600. Beginning around this time, British and other Europeans settled primarily on the east coast. Later Africans were imported as slaves. The United States experienced successive waves of immigration, particularly from Europe. Immigrants sometimes paid the cost of transoceanic transportation by becoming indentured servants after their arrival in the New World. Later, immigration rules became more restrictive; the ending of numerical restrictions occurred in 1965. Recently, cheap air travel has increased immigration from Asia and Latin America.
Document 12: Marjory Stoneman Douglas High School: Marjory Stoneman Douglas High School was named after the Everglades environmentalist Marjory Stoneman Douglas. The school opened in 1990 with students in grade 9 through grade 11, most of whom transferred from nearby schools Coral Springs High School and J.P. Taravella High School. The first senior class graduated in 1992.
Document 13: Marjory Stoneman Douglas High School: Marjory Stoneman Douglas High School was named after the Everglades environmentalist Marjory Stoneman Douglas. The school opened in 1990, the year of her centennial with students in grade 9 through grade 11, most of whom transferred from nearby schools Coral Springs High School and J.P. Taravella High School. The first senior class graduated in 1992.
Document 14: Sandra Steingraber: Sandra Steingraber (born 1959) is an American biologist, author, and cancer survivor. Steingraber writes and lectures on the environmental factors that contribute to reproductive health problems and environmental links to cancer.
Document 15: The Everglades: River of Grass: The Everglades: River of Grass is a non-fiction book written by Marjory Stoneman Douglas in 1947. Published the same year as the formal opening of Everglades National Park, the book was a call to attention about the degrading quality of life in the Everglades and remains an influential book on nature conservation as well as a reference for information on South Florida. It was used as recently as 2007 by "The New York Times".
ground_truth: 1630s
sub_queries: The Everglades: River of Grass >> author Answer: Marjory Stoneman Douglas
Marjory Stoneman Douglas >> country of citizenship Answer: America
when did the first indentured servants came to America Answer: 1630s