Answer:

chaco

AnswerCrossword Clue
CHACORegion drained by the Paraguay River
CHACOSouth American region
CHACORegion fought over by Bolivia and Paraguay during the Thirties.
CHACODisputed S. A. territory.
CHACOCanyon in New Mexico.
CHACOSouth American region.
CHACOGran ..., area of S. A.
CHACOExtensive S.A. plain
CHACONew Mexico's ... Canyon, a national historic park site
CHACO... Canyon (Pueblo cultural area)
CHACONew Mexico's ... Canyon
CHACONew Mexico canyon
CHACONew Mexico's ..... Canyon