He was granted land because he <span>served bravely during the Revolutionary War.
Austin dabney was born as a slave in north carolina. He displayed a lot of brave actions during his involvement in war agains the british that earned him the tile of hero. As a token of gratitude, the state of Georgia granted him a portion of land after the war.</span>
The Egypt conquest of distant lands would be the factor which contributed most to the growth of the trade in the New Kingdom.
Hope this helps! :D
~PutarPotato