> the humanity

It's just humanity, not the humanity. Like information, equipment, advice and stuff, humanity implies one or more of something and is what is called an uncountable noun, similar to but a little different from a collective noun. Uncountable nouns don't have a plural form because their regular form implies that it may be a plural.

Word forms: humanity
uncountable noun. All the people in the world can be referred to as humanity.
Example: They face charges of committing crimes against humanity.
Synonyms: the human race, humankind, mankind, man.