Answer:
In simple words, Unlike WWI, which was battled in trench with machine weapons as well as biological weapons, WWII was conducted with modern weapons and equipment, with more aircraft, warships, vehicles, and submarine. During the war, special operations techniques, as well as atomic weapons and covert communications, were created.
The reason the Spanish established missions were to spread region into a new region. Hope this helps, good luck.
Answer:
Well based on the fact that the very first patented rock crushing machine was made in the year 1830, and the first successful, Eli Whitney Blake's, was in 1858, I'd say the development process was around 30 years.
The Han dynasty tried to fix the problems other dynasties had fallen to, such as government that was too centralized or fragmented. Instead, Han Gaozu allocated power to his family. This didn't work too well either, but the dynasty was still successful.
The Qin dynasty was very short, yet of great importance. The founder, Qin Shihuangdi, established centralized rule and divided China into provinces. He relied on his own loyal servants to rule the provinces rather than established nobility and disarmed regional military forces.
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</span>The Zhou dynasty established the Mandate of Heaven, a belief that a ruler's authority came from a higher power and could also be taken away if he acted unjustly. In addition to losing office, a ruler could sometimes have further consequences, like the destruction of his ancestral temple.