Answer:
The most important cost of WW1 were human lives, as millions of people died during the war and later from many diseases.
Explanation:
WW1 was the most brutal war until then, which devastated European continent.
Although, material costs were enormous, human casualties were even greater.
Only nine millions who died in the war, millions who were wounded and deeply hurt, many families, even many countries devastated.
A military station in Hawaii would allow for the US to have a Pacific base on American soil. Some of America's largest enemies are in the East (China and North Korea) and a military base in the Pacific would allow us to have more control over the area, while still being on American soil. Being on US soil will allow us to have better access to supplies and logistics, as well as avoiding any problems with the allied nations that we would have to set up base in otherwise (such as problems the military faces with their bases in Okinawa).
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George Washington's early military career (1754-1758)—during the Seven Years' War—was not uniformly successful. In his first battle, he and his men were ambushed and forced to surrender Fort Necessity on the Pennsylvania frontier. ... Washington led the surviving British and Colonial soldiers on a successful retreat.
Lincoln successfully guided the country through it's most difficult period, The Civil War