Whatever religion the original inhabitants of the Baltic region had predates recorded history. Mesolithic hunters, gatherers and anglers of the region practised a religion focused on their occupations. Marija Gimbutas controversially suggested that agrarian settlers of around 3500–2500 BCE were examples of earth-worshiping Old Europeans. After this, Indo-Europeans entered the area and brought with them their Proto-Indo-European religion. This religion, including elements from the religious past of the region, evolved into the paganism which is attested in the Middle Ages and later.