Theodore Roosevelt became the youngest man to assume the U.S. presidency after President William McKinley was assassinated in 1901.
Answer:
Red blood cell ( RBC)
Explanation:
The antigens expressed on the red blood cell determine an individual's blood group. The main two blood groups are called ABO.
Answer: B) use of indentured servants, and later enslaved Africans, for agricultural labor
Explanation:
This answer fits the best. The other answers can be cancelled out.
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