Answer:
People with type O- blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group. ... Their plasma does not contain A or B antibodies and can be transfused safely to all blood types.
The invention of the cotton gin.
The main reason why the twenties are sometimes called an "age of prosperity", especially in the United States, is that "<span>A.Incomes throughout the United States grew and the middle class held most of the wealth," due mostly to speculation in the stock market. </span>
The enactment of the federal civil rights was necessary in 1960 to end Jim Crow laws.
Jim Crow laws was passed after the Civil War and legalized racial segregation especially between the whites and blacks.
- The federal civil rights was passed to prohibit the discrimination that emanates from the Jim Crow laws.
- Hence, the enactment of the federal civil rights was necessary in 1960 to end Jim Crow laws.
Therefore, the Option B is correct.
Read more about Jim Crow laws
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He created a system of cooking in which food is finely diced and sauteed in a wok. He created a system of ethics which, if followed, would lead to a stable and harmonious society. He created a system of brush painting and calligraphy.
