What are strategies that people could use to effectively communicate with someone from a different culture?

They can use a translator or have someone in there language talk to them

Many cultures have specific etiquette around the way they communicate. Before you meet, research the target culture, or if time allows, do some cross cultural training. For example, many cultures expect a degree of formality at the beginning of communication between individuals. Every culture has its own specific way of indicating this formality: 'Herr' and 'Frau' in Germany, reversing family and given names in China and the use of 'san' in Japan for men and women etc. Be aware of these familiarity tokens and don't jump straight to first name terms until you receive a cue from the other person to do so.