kindness

1. When do the Kashmiri vendors travel to cities to sell their goods?
2. Why is it a hard life for the Kashmiri vendors ?
3. Why was the author surprised when his brother in law called the vendors?
4. I felt sad and guilty at being a party to such behaviour” -what does the word party mean here? And what kind of behaviour did he refer to?
5. Who was kind ?what was his deed of kindness?