Assembly sites are locations where people gather to discuss and debate important topics. They can be physical locations, such as a town hall or a meeting room, or virtual locations, such as an online forum. The term 'assembly sites' is often used to refer to places where people come together to make decisions, such as political rallies or protests. The crossword solution for the term 'assembly sites' is 'plants, ' which refers to the physical locations where people gather. Plants can be used to host meetings, debates, and other events.