Archaeologists in Michigan have excavated a Native American camp near Dumaw Creek. Radiocarbon dating of animal bones found at the site indicates that the camp dates from some time between 1605 and 1755. However, the camp probably dates to no later than 1630, since no European trade goods were found at the site, and European traders were active in the region from the 1620's onward.
Which of the following, if true, most strengthens the argument?
Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.
At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found.
The first European trade goods to reach the area would have been considered especially valuable and preserved as much as possible from loss or destruction.
The first European traders in the area followed soon after the first European explorers.
The site is that of a temporary camp that would have been used seasonally for a few years and then abandoned.
①动物bone把时间定位在1605-1755
②但是,camp不晚于1630年出现(早于1630)。因为没有欧洲货物在这个camp,欧洲trader在这个地区很活跃在1620s。
其实很容易看出gap来:1620欧洲trader在这个地区很活跃==》没有欧洲货物,这个camp就就肯定早于1630
说明有一些其他在1620年代的camp发现了货物,可以和这个camp做对比
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