he meant we'd be talking japanese "funny raa-raa language" , you see, politics and war is about taking over, and making new rules for the 'winners' so if the german had won the ww2, we would NOT be alive, also deaf babies and deaf children would be shot dead, because the Nazis believe in 'perfect' races (colour)
Back to Japan, if they won the ww2 , the pacific, and china would probably bee speaking in Japanese, and indeed -Japanese would have been the 'mst important busienss langauge'.
In europe, manyu coutries have a second language - English for international trades.