Answer:
When Austria-Hungary declared war on Serbia, it led to Russia declaring war on Austria-Hungary as well because Russia was in an alliance with Serbia.
Germany which had an alliance with Austria-Hungary via the Triple Alliance then declared war on Russia.
Russia was already in an alliance with Great Britain and France known as the Triple Entente and when Germany declared war on Russia, Great Britain and France declared war on Germany.
Thus began the Great War.
The correct answer should be climate.
Answer:
C. Trench warfare
Explanation:
A's incorrect as alliances have existed for thousands of years
B's incorrect as an infantry charge's greatest weakness is the machine gun for obvious reasons
D's incorrect as both sides had machine guns, and was not the reason for victory.
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This leaves C, which makes sense as troops would be forced to hide on lower ground due to the deadliness of machine guns
<em>Basically the text is explaining that the way Americans level of skill made them unequaled to the rest of the world (mind, that is not a fact because there was a large share of well-working people in the world in this time) . Also it explains that American brain and ability to construct (why is this entire article just bragging about Americans being so much better when that's not 100% true?) was one of the most economic boosting things and they were very productive for that timeframe.</em>
<em>That's my best understanding of the article. (Scholastic really likes to brag about Americans, huh?)</em>
<em>-Northstar</em>
