The answer is C that planets and stars moved in the sky
<em>needs is often a door to invention; In the Second World War a series of objects were developed to facilitate either communication or to fix objects that suffered some damage.
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<em>Some of those inventions that took place in the Second World War are:</em>
Walkie Talkie: <em>This invention was carried out in 1940 on behalf of Motorola; its function consisted of a double-track radio, which played a very important role for long-distance communication in the Second World War
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Adhesive tape: <em>During the Second World War the machinery, ammunition and equipment suffered some damage and it is for this reason that the soldiers will need some characteristics resistant to water, strong and flexible to repair said damages, this is why Johnson & Johnson invents the adhesive tape.</em>
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Hope this helps...
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I do not believe there is the right reason for any country to go into war. Although if I had to pick one reason that a country might go into a war, or a reason that could be justifiable for going into war. My decision would be going into war to protect an ally from an invasion.
This is not because of the thought of war, this is because if a country lose his allies, it would be defenseless when war is thrust of the pawn that country who needed that Ally.
So i would say the answer is: B.) to protect an Ally from an invasion.