France has offered aid to help the US East Coast recover from the ravages of superstorm Sandy, expressing "total solidarity with the American people."
The death toll across several states on the US eastern seaboard has risen to 42, with another death in Canada, and is expected to climb further as several people remained missing.
Sandy had already killed at least 67 people -- including a US national in Puerto Rico -- as it swept through the Caribbean, meaning the overall toll from the storm is now 110.
Some eight million Americans remained without electricity.
Disaster estimating firms forecast that the massive storm would affect more than 60 million Americans, a fifth of the country's population, and cause up to 20 billion dollars in damage.