Enjoying a production run that spread out over 14 years, over 290,000 of these machines were produced. Around 1940, the cost of the Farmall M was around $1,100. The cost of the Farmall MD was around $1,700. Many of the Farmall M tractors are still in use today, and parts are readily available. As far as collectability, these are the least popular of the letter series, most likely due to their large size.
The reason for rules in war is simple: people value life. The rules of war are mostly about giving people a way to lose without dying. Rules, such as the use of a white flag, give people a way to surrender. Bans on chemical and biological weapons prevent indiscriminate and uncontrollable killing. And rules protect POWs.
Another difference is the reason  behind the war. World War One was fought because the next in line  for Austria-Hungary's throne was killed and the allies of  Austria-Hungary and Serbia all helped out so a small war turned  into a World War.The American Civil War was very different, it was  fought over the rights to have slaves.. 8 people found this useful.orld War One was different to any other war because it was the first war of that size and importance and it was also the first war that spanned across the world.