Stable regions of the craton where shields are covered by sedimentary rocks are called platforms.
Precambrian rocks are often called basement rocks because they lie beneath a covering of fossil-bearing sedimentary strata.
Various Precambrian provinces can be delineated within the North American continent, based on radiometric ages of rocks, style of folding, and differences in trends of faults and folds.
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So they wouldn't have to sacrifice there people and would have an alliance but George wasn't willing to do this hope this helped because you posted 6min ago
Answer:
ended the national origins quota system
Explanation:
