Dromund Kaas

All the Datacron Locations:

Galactic History 18: The Hutt Cataclysms --- Awards a yellow matrix shard
Found at coordinates X: -187 Y: 1737 Z: -110 in the heroic area malignant bog on Dromund Kaas
Visible on top of a waterfall, when looking at the waterfall there will be a path off to the left, follow this path and once u get into the opening area, turn to the right to see the waterfall
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Galactic History 19: The Pius Dea Crusades --- +2 Strength
It's in the South Hanger of the planet Dromund Kaas Spaceport - Docking Bay D-61.
The docking bay is the very south of the spaceport by the B-04 Elevator.
It's in the middle of the left side of the Docking Bay map. It's on a huge crate.
If you go up the ramp just north of the crate at top around the first corner there is a gap and below you can see rails that can take you just above the crate. Look up above the crate and get a feel for where the rails start at so you can figure out where to jump down.
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Galactic History 20: Chancellor Blotus --- +2 Endurance
Found on Dromund Kaas, at Coords X: -789, Y:1453
When entering Lord Grathan's Estate from the Northeast, follow the wall to your right.You will see a path and just follow that. The coords for the path are: X: -699, Y: 1528
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Galactic History 21: The Birth of the Mandalorians --- +2 Presence
Found on Dromund Kaas, at coordinates: X:580, Y:796 , Z:115
Take the path south from the spaceport. At the end there is an alcove at X:768, Y:737. There is a path there, just follow it until you reach the end.
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Galactic History 22: The Second Great Schism --- +2 Cunning
Found just past the kaas expansion district and into the dark temple approach.
There are 2 crates around coordinates: X: -1093 Y: 216: Z: -26
Jump on top of these crates and then the rocks they are right next to, you will see a path cut into the mountain follow this path, then drop down on top of the large rocks protruding from the ground, then you'll easily be able to jump on top of the rock that has the datacron on it at coordinates: X: -1219 Y: 211 Z: -47