Is “deliberation” or “deliberations” correct when done over multiple topics?

Question

Are these sentences correct?

1. Contemporary deliberation on American culture, economy, politics in the 20th and 21st century?

2. Contemporary deliberation*s* on American culture, economy, and politics in the 20th and 21st century.

Answer 1

Sentence number 1 makes perfect sense. For better style, I'd write:

Contemporary deliberation on American culture, economy and politics in the 20th and 21st century.

EDIT: "Deliberations" is better for this title, as I understand it to be, since it looks like many ideas will be expressed.

Answer 2

Neither is a sentence as the term is commonly understood because neither contains a finite verb. However, both deliberation and deliberations might be found, depending on context.