What stimulate the development of renaissance culture

Correct me if i'm wrong:

From its origins in 14th-century Florence, the Renaissance spread across Europe – the fluidity of its ideas changing and evolving to match local cultural thinking and conditions, although always remaining true to its ideals.

the deaths of over a million communist soldiers

post-traumatic stress disorder in veterans

stories were past on to people they were told too who told it to the next and so on. hope this