One of the most significant challenges is building an airplane had to do with "propulsion", since the technology that allowed motors to have enough energy to lift an airplane into the sky with a passenger wasn't available for most of history.
This is the right one
<span>c.
hydroelectric power.</span>
C might be the answer right
Answer:
Moreover, key public influences include the role of emotions, political socialization, tolerance of diversity of political views and the media. ... Additionally, social influence and peer effects, as originating from family and friends, also play an important role in elections and voting behavior.
Explanation:
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Paleolithic or old stone age from the first production of stone artifacts
