If Taiwan attacked China, South Korea bombed North Korea, and India invaded Pakistan, all to reclaim their territories, which side would win?

China could defeat Taiwan.  Sth Korea could defeat Nth Korea but China would defend Nth Korea. Pakistan would go nuclear in India invaded. 

North Korea and Mainland China are nuclear powers, they can quickly wipe out South Korea's capital Seoul since it is close to the border with North Korea. Taiwan is tiny and it cannot attack China without being wiped out. India does not need Pakistan, a largely Islamic country. It was the reason the two became different countries, since India did not want so many Muslims inside its own country. I support the status quo. 

FIRST OFF TAIWAN IS NOT GOING TO ATTACK CHINA, THEY ARE NOT THAT STUPID AND IF SOUTH KOREA WAS GOING TO BOMB  NORTH KOREA THEY WOULD HAVE DONE THAT A LONG TIME AGO.  WITH INDIA AND PAKISTAN HAVING NUCLEAR WEAPONS, I DON'T THINK INDIA IS GOING TO INVADE PAKISTAN TO GET CONTROL OF THE TERRITORIES THEY CLAIM IS THEIRS.  AND ON TOP OF THAT INDIA HAS TO WORRY ABOUT CHINA

Taiwan would attack China only if it feels threatened by Chinese soldiers

South Korea would bomb North Korea if North Korea bombs South Korea

India will never invade Pakistan but may acquire territories illegally occupied by Pakistan

In a war, the good buddies always win while the evil regimes always falter.

Whose territory?

Taiwan never possessed China

South Korea agreed to give up North Korea (and neither side has a stronger historical claim on the other)

India agreed/forced division from Pakistan (and neither side has a stronger historical claim on the other)

Who would you support?

Given the general outcomes of recent wars, which usually do not suit even the victors, and the unequal forces which would be involved, and the fact that much of the rest of the would would inevitably be drawn into the conflict, that is an idiotic question.

And you need only look at the history of those parts of the world over the centuries to see that 'their territories' is a nonsensical claim.

Assuming that you live in the USA, when was the last border dispute in your country settled? 1903 is the answer.

China, South Korea, draw.

as the U.S would back our friends, 'we' would ...................