The "conquest of the desert" (1879-1880) was a campaign that pushed the surviving indigenous peoples into harsh region of patagonia, or annihilated those who resisted. the general who led this campaign was rewarded with the presidency in argentina (1880-1886). the campaign opened up the plains for agricultural expansion. who was the man who led this campaign?

Julio Argentino Roca

Explanation:

Julio Argentino Roca was an army general who served as 8th President of Argentina from 1880 to 1886. After he was president again (1898-1904). He is known for directing the "Conquest of the Desert", a series of military campaigns against the indigenous peoples of Patagonia which place these territories under the control of the national government. These lands were used for livestock and agriculture, which were economy sectors expanded during his terms as president. But the indigenous communities were decimated.

6 units. ab and lo are congruent sides, and if ab= 6 units, then lo would be the same.

d is the right answer