In Japan, bows are the foundation.
People about shake hands in Japan.
In Japan, When Japanese people call each other's name,usually people call eachother by the last name.
Friends call eachother by the first name.

In Japan, The body language for showing "Idon't know"is leaning your horizontally.
In Japan, "come here" is turning the palmdown.
however, in the United States this expression becames a reverse meaning.