If it is permissible for a woman to live alone, why can’t she travel without a mahram?

No File Exists
Check below answers in case you are looking for other related questions:
She works in a residence for foreign female students
Woman taking off her clothes in a house other than her husband’s house

No File Exists
Related Answers:
Taking a female servant for Hajj with no mahram for her
Is it permissible for her daughters to do ‘umrah without a mahram?
Rulings concerning women riding with drivers and without a mahram
She works in a residence for foreign female students
Woman taking off her clothes in a house other than her husband’s house

Recommended answers for you:
If his wife does not agree to him being away for more than six months
Description of Eid prayer
Ruling on buying and selling shares
Guidelines on women working outside the home
Suffering From Waswas (Insinuating Whispers) of the Shaytan About the Essence of Allah