Pi-meson or also known as pion is one of any of the three (3) subatomic particles which characterizes of being unstable of its nature. The charged pions
π+
and
π−
decay with a mean lifetime of 26.033 nanoseconds or 2.6033×10−8 seconds, and the neutral pion
π0
decays with a mean lifetime of 84 attoseconds (8.4×10−17 seconds).
As the political aspects of geography focus on ethnicity, religion and the difference among the large regional forces of the environment that play a crucial role in defining the political stability of the world nations across the national boundaries.
<u>Various other factors like the regional variation arise from the political inequalities among the member nations if the wold and the instability of the government that break up the integrity of the nations like in the case of African nations wars and violence caused by the political instability has to lead to the eventual breakup of the country in terms of economic growth and uneven development.</u>
