Crevecoeur is a writer often regarded as an important figure who took part in constructing a national identity. For him one of the main contribution of European peoples is the propelling force that they represent.
Answer: Indians cultivated and developed many plants that are very important in the world today. Some of them are white and sweet potatoes, corn, beans, tobacco, chocolate, peanuts, cotton, rubber and gum. Plants were also used for dyes, medicines, soap, clothes, shelters and baskets.
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Archaeologists use written sources to help them find sites where they will find arti- facts. Similarly, historians examine material culture to help them understand what they read. Anthropologists study the characteristics of past and present human communities through a variety of techniques. In doing so, they investigate and describe how different peoples of our world lived throughout history. To establish a relative time frame, geologists have arranged the rocks in a continuous sequence of chronostratigraphic units on a planetary scale, divided into eonothems, erathemes, systems, series and floors, based on stratigraphy, that is, on the study and interpretation of the strata, supported by major biological and geological events.