US rank worse than the UK

[Katarina-Borovska]

Hi,

Can you please advise? We have been focusing on the UK traffic, but this year we are expanding to all English speaking countries, primarily focusing on the US market. Our SEO efforts are not equally fruitful in the US, but they are really good in the UK. Can you please suggest what seriously impacts rank these days?

• our main domain that we use in the UK is domain.com. The US version uses sub-directory domain.com/us. Is this a problem?

• we have about 3 times more traffic from the UK than the US, and we have only UK backlinks. Do they still impact SEO significantly?

• can our poor US rank be related simply to a larger market?

Any ideas on how we can improve? Technical suggestions, page organisation etc, I'm open to any suggestions.

Many thanks. Katarina