Because they can be used for weapons and tanks.
Answer:
United States became the world's sole superpower
Explanation:
the collapse of the soviet union
<span>It gave Africans the things to trade with countries and also themselves so they could make kingdoms.</span>
Erik the Red. Erik the Red, byname of Erik Thorvaldsson, Old Norse Eirik Rauð, Icelandic Eiríkur Rauði, (flourished 10th century, Norway?), founder of the first European settlement on Greenland (c. 985) and the father of Leif Eriksson, one of the first Europeans to reach North America.
Hope this helps. :)
The answer is B. "The scientific revolution led to new ways of thinking about the world, which led to the inventions that made the Industrial Revolution possible."