Original sentence: , are now independent kingdoms that, along with the United Kingdom, recognise one person as their respective sovereign head of state, with a distinctive title in each nation (King/Queen of Canada, Jamaica and so forth); these countries, including the UK, are known as Commonwealth Realms.There are currently 31 monarchs reigning over 45 extant sovereign monarchies in the world; the disconnect in numbers between monarchs and countries is explained by the fact that the sixteen Commonwealth Realms - vast geographic areas including the trans-continental realms of Canada and Australia - are separately reigned over in personal union by one person, and one other monarchy, Andorra, by two non-resident (French and Spanish) co-monarchs
Edited sentence: , are now independent nations that, along with the United Kingdom, recognise the British monarch as their respective sovereign head of state, with a distinctive title in each (King/Queen of Canada, Jamaica and so forth); these countries, including the UK, are known as Commonwealth realms.There are currently 31 monarchs reigning over 45 extant sovereign monarchies in the world; the disconnect in numbers between monarchs and countries is explained by the fact that the sixteen Commonwealth realms - vast geographic areas including the trans-continental realms of Canada and Australia - are separately reigned over in personal union by the British monarch, and one other monarchy, Andorra, by two non-resident (French and Spanish) co-monarchs