Final answer:
Business customs that must be recognized and accommodated are called cultural norms.
Step-by-step explanation:
Business customs that must be recognized and accommodated are called cultural norms. These are behaviors or practices that are either required for or expected of the members of a particular group. In the context of business, cultural norms can vary from country to country, and it is important for businesses to understand and respect these norms to establish successful relationships with clients, investors, and employees from diverse cultural backgrounds.
For example, in some cultures, it may be customary to exchange business cards with both hands as a sign of respect, while in other cultures, direct eye contact during business negotiations may be seen as aggressive.