Tsunamis (and also underground volcano eruptions)<span />
The creation of the silk roads.
Is your question about whether the statement is true?
Yes, it's true. !
Let's list the countries from East to West: India, Bhutan, China, India Again, Nepal and China, then India Again, Pakistan and Afghanistan.
The only problem with this statement is that it actually stretches a bit further: to Tajikistan as well.