How did the 'Green Lantern/Green Arrow' series break ground for DC Comics?

'Green Lantern/Green Arrow' was revolutionary because it directly addressed real-world social issues within a superhero context. Green Lantern, traditionally a space-faring hero, was paired with Green Arrow, a street-level vigilante, and they traveled the country confronting problems like poverty, racism, and drug addiction. This challenged the conventions of superhero comics and paved the way for more mature storytelling.