A unicameral legislature is a type of legislative body that consists of a single chamber or house. This means that all members work together in one assembly to create, amend, and pass laws. Unicameral systems are often seen as more efficient because they eliminate the need for a second chamber, which can streamline the legislative process. Countries like Nebraska in the United States and New Zealand have adopted unicameral legislatures. Supporters argue that this system can reduce costs and improve accountability, while critics may claim it lacks checks and balances that a bicameral system, with two separate chambers, can provide.