Original sentence: Archaeological evidence of particular kinds of fluted-stone have been uncovered, suggesting trade occurred between such groups.As the glaciers that covered much of North America receded in the warming climate following the most previous glacial maximum, tundra foliage was the main plant-growth.However, evidence suggestive of even earlier human occupation in South America has generated an alternative theory that Paleo-Indians, or at least some groups of them, may have come from the the Pacific Islands or mainland Asia by boat.Paleo-Indians likely travelled in small groups of approximately 20 or 50 members of an extended family.Paleo-Indians primarily hunted mastodons, and mammoths, as well as prehistoric bear, bison, and caribou, large animals who were able to live on the tundra.The Paleo-Indians are known to have hunted with both fluted stone-pointed wooden lancing spears and shorter spears that they would sling using an atlatl, and probably also foraged for edible plants.The current prevailing theory postulates that Paleo-Indians entered the Americas from Asia via a theoretical land bridge (see also Beringia) connecting eastern Siberia with present-day Alaska when sea levels were significantly lower because of widespread glaciation between about 15,000 to 35,000 years ago
Edited sentence: Archaeological evidence of where particular kinds of fluted-stone have been uncovered suggests that groups traded with other groups.As the glaciers that covered much of North America receded in the warming climate, tundra was the main plant-growth.Paleo-Indians also foraged for edible plants.Paleo-Indians primarily hunted mastodons, and mammoths, as well as prehistoric bear, bison, and caribou, large animals who were able to live off of tundra.Paleo-Indians travelled in small groups of approximately 20 or 50 members.The prevailing 20th-century Euro-American theory claims that Paleo-Indians entered the Americas from Asia via a theoretical land bridge at low tide that supposedly connected eastern Siberia with present-day Alaska.These groups consisted of the members of one extended family.They hunted with both fluted stone-pointed wooden lancing spears and shorter spears that they would sling using an atlatl.This idea is being challenged with proof of earlier occupation in South America, generating an alternative theory suggesting that Paleo-Indians, or at least some groups of them, may have come from the the Pacific Islands by boat, or Asia proper