What makes a successful civilization?

Answer 1

I don't have sources to back this up.

1. A successful agriculture to support the large and increasing habitants of the civilization.

2. The civilization needs to be more powerful in a military aspect than it's neighbors to grow into something grand, like the Roman Empire.

3. Functioning water systems. If they falter so will everything else.

4. Most - if not all - civilizations originated from a single city that was located close to water.

5. Liberty and democracy.

Answer 2

I don't have sources to back this up.

1. A successful agriculture to support the large and increasing habitants of the civilization.

2. The civilization needs to be more powerful in a military aspect than it's neighbors to grow into something grand, like the Roman Empire.

3. Functioning water systems. If they falter so will everything else.

4. Most - if not all - civilizations originated from a single city that was located close to water.

5. Liberty and democracy.

Answer 3

by working together