Final answer:
The Soviet Union funded research on Cucuteni-Trypillian sites due to their archaeological significance and the potential historical insights they could provide.
Step-by-step explanation:
The Soviet Union first started funding research on Cucuteni-Trypillian sites due to their archaeological significance and the potential historical insights they could provide. These sites are known for their well-preserved artifacts and large settlement complexes, which allowed researchers to study the social, economic, and cultural aspects of these ancient societies.
The Soviet government also saw an opportunity to highlight the achievements of the Soviet Union in the field of archaeology, which would help promote their cultural and scientific prestige globally. Soviet archaeologists conducted extensive excavations at Cucuteni-Trypillian sites, leading to valuable discoveries and research publications.
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