THE Difference in American and British Spelling

Since the Americans dominate the Internet, the words are mostly spelt 
the American way. As we follow British spelling in India, we should 
know the difference in them. 

For example-

The Americans spell colour, humour, flavour (British spelling) as
color, humor and flavor.

Examples

American usage- A rainbow has seven colors.
British usage- Holi is a festival of colours. 

American usage- Darjiling tea has a flavor of its own.
British usage- The flavour of the tea is appealing. 

'However', 'nevertheless', and 'nonetheless' project a contrasting
thought. Please remember they are generally used formally i.e. in
writing exclusively. 

Examples-

He is quite poor. Nevertheless, he is likely to succeed because of his
determination.
India is fragmented by inner turmoil. However, she is doing well in
education and technology. 

We're having difficulties with the project. Nevertheless, we'll finish
on time.
We've been working hard all week. However, we'll have to continue next
week as well.