深度解析GMAT阅读经典难题-【印第安水权】( 八 )

 

Some American Indian tribes have also established water rights through the courts based on their traditional diversion and use of certain waters prior to the United States` acquisition of sovereignty.

(2.由于历史原因,印第安部落在美国建国之前就开始使用一些水域,因此他们如今可获得此水权。)



For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848. Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands; in any event, no treaty, statute, or executive order has ever designated or withdrawn the pueblos from public lands as American Indian reservations.

(a.举RG的例子支持2.的阐述:RG地区在美国建立之前就存在,因此从来不是联邦公共用地。)