The US is a multicultural country, popularly called a 'melting pot' as our people come from many different backgrounds and we blend many cultures, religions, and beliefs into one society. Both our personal lives and professional interactions reflect a blend of cultures.
There is not an official national language, but English is the de facto language used in all official government proceedings, street signs, and in all major stores, restaurants, etc. And while English is the primary language spoken at home by the majority of the population, Spanish is the second most language spoken at home, followed by Chinese and French/French Creole.
There is no state religion recognised in the US, but many communities have multiple houses of worship.
Whatever religion you practice - or don’t practice - you will be able to find a community of like-minded individuals with whom to celebrate, should you choose to do so.
It is customary when meeting an individual in a professional setting that you will either shake hands to greet each other or have no physical contact. It is not customary to greet anyone by giving a hug, or otherwise invading the personal space of another.
You may present your business card in a professional or networking setting, but you might not receive one in turn. Often, individuals will not immediately share their business card or contact information. When exchanging a business card, there is no proper etiquette.
As you begin networking and seeking employment, you may want to have business cards to represent you or your company’s brand. For more information on how to prepare a business card, The Balance outlines how to create an effective business card.