The size of the modern human adult brain is about 1350 cc.. 1,350 g. The mass of a newborn human brain is about 350-400g. The mass of an adult human brain is about 1,300 to 1,400 g. The brain makes up about two percent of the humans mass. Its average width is about 140 mm, average length is about 167 mm, and average height about 93 mm.
The Vietnam war was the longest war American had fought in. We got involved with the war in 1954 and it ended in 1973. 58,000 Americans were killed in the war and 2-3 mi â¦ llion Vietnamese were killed as well. 7 people found this useful.
Second, we're limiting the list to America's foreign wars, so battles fought on U.S. soil (such as the Civil War) or on it's borders (the Mexican-American War) are not included. None of these wars were longer than the Afghan war, anyway.] Here we go: 1. Afghan war. October 2001 to 2016 ~15 years; 1,806 U.S. troops killed in action ; 2. Vietnam War