Why learn intercultural differences??? Once you’ve mastered English, you still need to learn cultural manners of the countries you deal with.
Bad English = bad business, but ‘broken ‘ English with the proper social ‘etiquette’ can still lead to business opportunities, as you avoid offending your foreign hosts. Your sincerity and cultural awareness of their ‘way’ of doing business will impress them and potentially open the doors to new relationships in a foreign country.That’s why we say ,’when in Rome, do what the Romans do.’