Hand shaking
UK,US,Germany,New Zeland:
These people shake hands on meeting and on departure.
Japan:
This type of bodily contact is considered impolite and is replaced by a bow.
Head Nodding
Bulgaria: “No”
Japan:”Yes,I understand”,or, “Yes,please continue”, but not necessarily, “Yes, I agree”
Parts of India: Head is moved(tilted) side-to-side to show agreement
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