Answer:
A.
Explanation:
The wright brothers were pioneers in the field of aviation
Answer:
Option: b. had little or no knowledge of sterilization.
Explanation:
Medical practitioners during the 17th century and 18th century had very little knowledge about the sterilization. Sterilization was little known during this period because practitioners were still learning how to treat people and did not give priority to sterilizing. Sterilizing the surgical instruments was not much in a process. It became increasing use in the late 18th century.
<span>C. Ratification of the Constitution
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In chronological order the events are in the order 4, 1, 2, 3
Medicine Lodge Treaty was signed 1867.
Wash*ta (it thinks it's a curse word) Massacre: 1868
Red River War: 1874-75
Reconstruction treaties: 1866
Freedom of the press is held hostage as journalists observe through prison bars.
