Why did Dorne submit to Robert Baratheon?

[RychardHunt]

Is there a reason why Dorne did not amass an army to attack Robert Baratheon or at the very least not pledge allegiance to Robert Baratheon after Elia Martell and her children were killed by the Mountain under Lannister orders? As a sort of revenge like when Robb Stark called in his bannerman to march South after they killed his father.

[Cheesedude]

Oberyn tried to rally Dorne for Viserys, apparently.

Doran says at once point that Jon Arryn came as Robert's envoy and managed to broker peace (which was presumbly only done because it would make Doran's ever-vague revenge plan easier).

[OnlyOne]

Is there a reason why Dorne did not amass an army to attack Robert Baratheon or at the very least not pledge allegiance to Robert Baratheon after Elia Martell and her children were killed by the Mountain under Lannister orders? As a sort of revenge like when Robb Stark called in his bannerman to march South after they killed his father.

Robert married a Lannister and Dorne at least as far as we know has no allegiance to the Starks especially if R+L=J.

[Dornish Vinegar]

As Cheesedude said, there were efforts on the part of Oberyn to raise Dorne for Viserys, which Jon Arryn quelled by meeting with Doran and delivering Lewyn Martell's bones. Since it took Jon's visit to convince Doran to reign his brother in, we're not sure if Doran was originally onboard with immediately rising in a second rebellion or not. It is safe to assume that Dorne would not have been able to mount an offensive rebellion to overthrow Robert on their own, though, especially with Lannister and Tyrell forces in such good condition, so that might explain why Doran/Oberyn did not press the issue. They may have been able to declare independence and mount a defensive war at the Prince's Pass and the Boneway, but that would have been risky against such large forces and would have resulted in many casualties to the smallfolk, which is as we know a very big concern of Doran's.

So yeah, a rebellion might have been their first choice, but Doran realized that the possible outcomes of that would not have been in their favor. So he went for the long game instead.