USA Map Puzzle

This app is a puzzle of the USA, where each piece is the shape of a state. Drag and lock the pieces into place. Your progress is saved as you lock pieces. If you exit the app and restart, your locked pieces are restored. 这个程序是在美国，每一块是一个国家的形状的拼图。拖动并锁定部分到位。当你锁定件的进度将被保存。如果退出应用程序并重新启动，你的锁片被恢复。