What is the fine-grained topic of the following text: Each tool has been shared with 10 participating regions which tested them in practice during the course of the project: Pomurje, Slovenia; Lodzkie, Poland; Vysočina, Czech Republic; Northern Great Plain, Hungary; Trenčín, Slovakia; Klaipėda District, Lithuania; Stara Zagora, Bulgaria, Covasna, Romania; Latvia; Tallin, Estonia. Only return the topic.
Testing tools in various European regions during a project