Are there more Mandarin speakers or Cantonese speakers in overseas Chinese areas?

The ancestors of Chinese in Nanyang (Singapore, Malaysia, Philippines, etc. ) are generally from coastal areas such as Guangdong and Fujian. Even when they go overseas, they still speak their mother tongue. But because everyone comes from different regions and speaks different dialects, they must speak a unified language-Putonghua. Therefore, most Chinese communities in Nanyang speak Mandarin.

The ancestors of Chinese in Europe and America were generally Cantonese in the late Qing Dynasty, so in the European and American Chinese communities, Cantonese was the most spoken.