Define the word petty as it is used below?

Question

"One key aspect of the Introduction was that is elevated the dispute between the colonists and the British from a relatively petty political dispute to a major event in modern history..."

Answer 1

of little or no importance; insignificant

Answer 2

minor, seemingly unimportant, surface-level, negligible, inconsequential

Answer 3

small, unimportant, insignificant.

Answer 4

insignificant.