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1936–1966. The Negro Motorist Green Book (also, The Negro Travelers' Green Book, or Green-Book) was a guidebook for African American roadtrippers. It was founded by Victor Hugo Green, an African American, New York City postal worker who published it annually from 1936 to 1966. This was during the era of Jim Crow laws, when open and often ...
Lanthanum hydroxide can be obtained by adding an alkali such as ammonia to aqueous solutions of lanthanum salts such as lanthanum nitrate. This produces a gel-like precipitate that can then be dried in air. [2] La (NO3)3 + 3 NH4OH → La (OH)3 + 3 NH4NO3. Alternatively, it can be produced by hydration reaction (addition of water) to lanthanum ...
Black is a racialized classification of people, usually a political and skin color-based category for specific populations with a mid- to dark brown complexion.Not all people considered "black" have dark skin; in certain countries, often in socially based systems of racial classification in the Western world, the term "black" is used to describe persons who are perceived as dark-skinned ...
Lanthanum is a chemical element; it has symbol La and atomic number 57. It is a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype.
The prevalence of obesity among men was not significantly different between non-Hispanic white, non-Hispanic black, and Hispanic men. [12] Some of these races tend to populate low socio-economic status neighborhoods and can lack resources such as health care support, safe play areas, and grocery stores with affordable fruits and vegetables. [61]
Pregnancy over age 50. Italian singer Gianna Nannini was 56 years old when she gave birth in 2010. Pregnancy over the age of 50 has become possible for more women because of advances in assisted reproductive technology, in particular egg donation. Typically, a woman's fecundity ends with menopause, which, by definition, is 12 consecutive months ...
African Americans. The history of African Americans or Black Philadelphians in the city of Philadelphia, Pennsylvania has been documented in various sources. People of African descent are currently the largest ethnic group in Philadelphia. Estimates in 2010 by the U.S. Census Bureau documented the total number of people living in Philadelphia ...
The Tulsa race massacre, also known as the Tulsa race riot or the Black Wall Street massacre, [12] was a two-day-long white supremacist terrorist [13] [14] massacre [15] that took place between May 31 and June 1, 1921, when mobs of white residents, some of whom had been appointed as deputies and armed by city government officials, [16] attacked black residents and destroyed homes and ...