The combination of imperialism, nationalism, militarism and alliances made Europe ready to explode with one little spark--the assassination of Franz Ferdinand and his wife Sophie on June 28, 1914. Ferdinand was the archduke, or leader, of Austria-Hungary. While visiting Sarajevo, he and his wife were killed by an assassin from Serbia, a country directly east of Austria-Hungary. Because of the assassination, Austria-Hungary declared war on Serbia. But it isn't fair to blame the entire war on the assassination of one fairly unimportant leader. Because Serbia was part of the Allied Powers, Russia stepped in to support Serbia against Austria-Hungary. And Germany wanted to help Austria-Hungary, so it declared war on Russia and France. Then Germany invaded Belgium. England and Japan couldn't stand by while Germany attacked their Russian and French allies, so they declared war on Germany. Driven by nationalism and alliances, and fueled by newly built-up weapons supplies, everyone was ready and able to fight. By the end of the year, the entire continent was at war. According to the text, why did Russia declare war on Austria-Hungary?
A to support Belgium after it was invaded by Germany
B because England and Japan stood by while Germany attacked their allies
C to retaliate after of the assassination of Franz Ferdinand
D to support Serbia, which was also part of the Allied Powers

What word best describes the tone of this excerpt from "the fall of the house of usher" by edgar allan poe? i looked upon the scene before me—upon the mere house, and the simple landscape features of the domain—upon the bleak walls—upon the vacant eye-like windows—upon a few rank sedges—and upon a few white trunks of decayed trees—with an utter depression of soul which i can compare to no earthly sensation more properly than to the after-dream of the reveller upon opium—the bitter lapse into everyday life—the hideous dropping off of the veil. there was an iciness, a sinking, a sickening of the heart—an unredeemed dreariness of thought which no goading of the imagination could torture into aught of the sublime. what was it—i paused to think—what was it that so unnerved me in the contemplation of the house of usher? it was a mystery all insoluble; nor could i grapple with the shadowy fancies that crowded upon me as i pondered. i was forced to fall back upon the unsatisfactory conclusion, that while, beyond doubt, there are combinations of very simple natural objects which have the power of thus affecting us, still the analysis of this power lies among considerations beyond our depth. it was possible, i reflected, that a mere different arrangement of the particulars of the scene, of the details of the picture, would be sufficient to modify, or perhaps to annihilate its capacity for sorrowful impression; and, acting upon this idea, i reined my horse to the precipitous brink of a black and lurid tarn that lay in unruffled lustre by the dwelling, and gazed down—but with a shudder even more thrilling than before—upon the remodelled and inverted images of the gray sedge, and the ghastly tree-stems, and the vacant and eye-like windows. admiration terror hope discovery loss

What has been a long term effect on the panama canal

How did europeans and africans displace native americans in north america’s predominant peoples?