Why is Natasha Romanoff called the Black Widow?

AIS - Natasha Romanoff จากเรื่อง MARVEL STUDIOS' BLACK natasha romanoff Natasha Romanoff will always be our hero ❤️ Experience the cinematic event, Marvel Studios natasha romanoff A deadly assassin is closing in on Natasha Romanoff Now Natasha must reunite with an unlikely group of spies from her past in order to survive and stop a

natasha romanoff All rights go to Marvel and Disney all fighting skills of Natasha Romanoff aka Black Widow took