Feudalism is the prevailing social framework in medieval Europe, in which the honorability held grounds from the Crown in return for military administration, and vassals were thusly inhabitants of the nobles, while the workers were obliged to live on their ruler's property and give him reverence, work, and an offer of the deliver, notionally in return for military insurance.
Answer:
The assassination of the Austrian imperial heir Archduke Franz Ferdinand by a Serbian nationalist in Sarajevo in 1914 led to a declaration of war on Serbia.
Because Serbia was a Slavic Russian ally, the czarist government declared war on Austria-Hungary. Germany declared war on Russia because it had an alliance with Austria. Then France had to declare war on Germany and Austria-Hungary because of its committments to Moscow. And so on.
The policy of military alliances and secret diplomatic arrangements practiced in the decades before WWI, conducted recklessly to a large extent by all great powers of Europe, constructed a web of mutual compromises that led to the great continental and global conflict we know as WWI, causing a sort of chain reaction. The war went on for 4 years and caused unimaginable loss of lives and destruction.
Explanation:
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be that the net incomes of much of the US population was increasing greatly during this time, thanks to the economic "boom" of the 1920s. </span></span><span />