Following the death of Sun Yat-sen<span>, General </span>Chiang Kai-shek<span> emerged as the KMT leader and launched the Northern Expedition in 1926 to defeat the northern warlords and unite China under the party.</span>
The answer would be trading for good, farming skills & organization or society.
Conflicts develop because of different ideas and beliefs.
I think one of them is poker I have no idea
It is B because Gorbachev was the leader of the Soviets
