Which statement explains one of the reason world war i was so much more destructive than earlier conflicts

World War I was much more destructive than any of the previous conflicts, because of the technological, military doctrinal, complex alliances, and assassinations.

*If any of the choices have these, choose it.

Technological: While most technology produced just before and during WWI was said to be "the weapon to end the war", it really only made it easier to murder people in larger numbers. Some example of Technological advancement can be seen in: Machineguns, which was created to be able to shoot large amounts of lead in a relatively short amount of time, resulting in large amounts of casualties in most cases. Another example are tanks, which were essentially armored cars with multiple machineguns. The US introduced the rotating turrent when they entered the war, which would then evolve to the type of tanks we are used to seeing today.

Military Doctrine: The Military took a different approach from before. Instead of doing strategic maneuvers on the ground with support, they essentially turned towards usage of trenches, which were complex, often zig-zagged half tunnels that spread across most of Western European mainland. They were usually fortified using wood and barb wire, and were used to protect soldiers. They were especially good for defense, if the enemies decided to cross no-mans land.

Complex Alliances: One of the reasons that World War I truly went global, without complex alliances, at the most Austrio-Hungary & Serbia would be at war with each other. However, with the alliances, countries generally declared war in support of their allies, leading to what is truly a global war.

Assassinations: The Spark that set off the war. Over the year, Serbia & Austrio-Hungary were constantly uneased by the fact of disputed land, in which each claimed for themselves. The Assassination of Austrio-Hungary's Archduke Ferdinand & his wife Sophie by the hands of the Black Hand Society led to the start of the war.

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there are no mutiple choices here

pacal the great: the throne was passed on to pacal through a female; as a result, he believed that he must legitimize his claim to the throne to add stability to his reign.

as a result, the daughter of ac kan's brother ruled until her son, pacal, reached an age old enough to assume the throne.

pacal the great became the king of the mayan city of palenque in a different way than most mayan kings.

pacal pointed out that ac kan had succeeded his mother as ruler, thereby establishing a precedent for the rule to pass through a female.  

he tried to justify that the way he gained the throne by connecting his mother with the divine mother and the mythological events that happened during the creation of the world.  

typically, the son of a male mayan ruler inherited the throne, but in 612 ce, king ac kan died and did not leave behind a male heir.

montezuma 1: even so, these wars of conquest failed to provide enough human sacrifices and because of this, he formed a triple alliance with cities in the valley of puebla-tlascala.  

in addition, montezuma realized that his government failed to the aztecs during the famine.

in order to appease him, montezuma increased the number of human sacrifices.

the aztec performed human sacrifices to their god huitzilopotchli because they believed he desired human blood.  

around 1440 ce, montezuma i became the fifth emperor of the aztecs and went on to rule for 28 years.  

soon after he assumed the throne, the aztecs were hit with a series of disasters, namely a plague of locusts, a flood, and a harsh frost  

huayna capac: huayna capac also fought to gain territories north of his empire in what is now ecuador.  

huayna capac significantly extended the inca empire to the south, into what is now argentina and chile.  

in 1493 ce, huayna capac became the eleventh ruler of the inca empire.  

huayna, therefore, wanted to gain his own lands and launched campaigns against tribes to the east and north of the empire.  

the inca empire reached its peak under the rule of huayna capac.

during this time the empire covered a vast territory including parts of present day colombia, peru, argentina, chile, bolivia, and ecuador.

during his reign, huayna heard about bearded men with pale skin that resembled the incan1 god viracocha and took this news as a bad omen.

huayna took this as another bad omen that predicted the destruction of the empire.