Yavapai Wars happened in 1861.
Space Wars happened in 1977.
The Persian Wars lasted from 499-448 BC. The Pelopenesian Wars lasted from 431-404 BC So the answer is: The Persian Wars happened first.
Meteos Wars happened in 360.
Ozma Wars happened in 1978.
Mytran Wars happened in 2009.
X-Wars happened in 2002.
Gemini Wars happened in 2012.
Carnatic Wars happened in 1746.
Arena Wars happened in 2004.
Trade Wars happened in 1984.
Neon Wars happened in 2006.