Because they both had to cross a border to get here........you may have to be more specific on the question for me to answer it
Answer:
Great Britain
Explanation:
Both Britain and the Netherlands colonized it, but it is viewed as a British colony.
I just had a paper on this. here is a quote that is pretty useful
Mao believed that in focusing on the anti-imperialist struggle, the Communists would earn the trust of the Chinese people, who in turn would renounce the KMT. From Zunyi, Mao led his troops to Loushan Pass, where they faced armed opposition but successfully crossed the river.
hope this helped