Answer:
Zhou dynasty ( C )
Explanation:
The Zhou dynasty which was the longest serving dynasty ruled from 1045 to 256 B.C.E the dynasty ruled of china and introduced feudalism to keep the people of China together and stable.
In feudalism the king gives out land to the nobles also known as lords in exchange for soldiers i.e the nobles provide soldiers to fight on behalf of the king in times of war in exchange of land given to them by the king.
In feudalism the serfs that is common people where allowed to hold lands and farm on it and also stay on it in return they will pay homage/give returns of their labor to the lords of the land in exchange for military protection as well.
The crusades had a huge financial impact on the fudal system as lords and Barrons sold assets and much of their property to Finance crusading, Manny of these men died and left their families in debt, those that were too old for war lost sons an heirs also leaving behind bebt, this led to what we would now call a great recession.
Answer: Russia mobilized its forces, prompting Germany to declare a two-front war against Russia and France.
More details:
Various systems of alliances were put in place before World War I. The two main alliance systems were the Triple Entente, which had Britain, France and Russia as allies, and the Triple Alliance, which had Germany, Austria-Hungary, and Italy as allies. There were also other alliances, such as Russia taking on recently independent Serbia as an ally, as both had ethnic Slavic populations.
So here's how the start of World War I happened. When the Austrian prince and his wife were assassinated in Serbia, the Austrian government threatened the nation of Serbia with retaliatory action (even though the assassination was carried out by a terrorist group, not the Serbian government). Russia responded to Austria's threat, because Russia was bound to protect its Slavic ally, Serbia. Germany responded to the mobilization of Russian troops, and when Germany declared war on Russia in 1914, they implemented a military plan (the Schlieffen Plan), which assumed war would mean they'd have to take on all members of the Triple Entente alliance. So as soon as Germany declared war on Russia, they sent troops to go attack France. That pulled France and Britain into the war immediately as well, and the war spread and became a global conflict.
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