The grain grinder is a component of the material culture of the ancient Cucuteni-Trypillian people; they used it to crush grain, turning it into flour for baking bread. Archaeologist Vikentiy Khvoyka discovered the first Cucuteni-Trypillian settlement in present-day Ukraine in 1893–1894 on 55 Kyrylivska Street in Kyiv. However, the culture was named after the village of Trypillia of Kyiv Region. The area of its spread in Eastern Europe ranged from the Dnipro River to the Carpathians, from Polissia to the Black Sea and the Balkan Peninsula. The settlements of the Trypillians covered a significant area and are referred to as proto-cities. One of the distinguishing features of this culture was the burning of their homes, which could have been caused by soil depletion, a lack of resources for livestock grazing, or perhaps it had a ritual significance. The Trypillians were primarily engaged in cultivation, grain farming, fishing, pottery, weaving, metallurgy (including copper processing), and animal husbandry.