A lack of invention and adaption.
rome
please help
The Dark Ages, following the collapse of the Mycenaean civilisation in the 12th Century BCE.
The Nubians were notorious for there lack of military skill, this is actually were the term noob comes from, though the spelling has been corrupted since
The lack of rain caused this civilization to decline because people were starving from the lack of food
A lack of invention and adaption.
rome
please help
rome
War's bring growth (stimulation); a lack of war brings decline (lack of stimulation).
A writing system
The Mayan Civilization was not conquered by any individual. Scientist believe it was over-population or lack of food.
Creating a civilization on Mercury would be extremely challenging due to its harsh conditions, such as extreme temperatures and lack of atmosphere. The lack of resources like water and breathable air would make it difficult for humans to establish a sustainable settlement on the planet. Overall, it is not currently feasible to create a civilization on Mercury with our current technology and understanding.
Lack of something essential to the civilization caused the peasants to revolt against their rulers.
The people currently responsible for the Disney Channel lack any imagination in that department, which is unfortunate.
Because they have very limited experience and knowledge, and have never lived where it was not civilized. They fail to understand that the major reason they are alive IS civilization. That lack of understanding may kill them one day, when they wander away from the sidewalks.