I believe the answer would be eleven, because 2×11+5=27
Both countries have different ways of doing it
It proved that the world was round to all the people who didn't believe so then.
The most heated point of protests for the Vietnam War was 1967-68. Vietnam aggression got really bad in the later 60's until the United States pulled out in the early '70's. Although there was conflict with Vietnam through the '40's and '50's, it was in the 1960's when Vietnam got heated.