Final answer:
The drum that announces major happenings doesn't match exactly with the options provided. In historical contexts such as the Kuba society, drums were used for significant events, such as the drum-shaped drinking vessel and the ivory gong used in rituals.
Step-by-step explanation:
The drum that traditionally announces major happenings is not specifically listed among the options provided (bass drum, snare drum, tom-tom drum, timpani drum). However, drawing on historical and cultural contexts, such as the Kuba society, drums like the drum-shaped drinking vessel and the ivory gong described as the Idiophone: Bird of Prophecy, were integral in social rituals and ceremonies. These instruments were used to signify important events or communications within the society. For instance, officials in Kuba society would carry the gongs and tap them during rituals to create sounds intended to dispel evil spirits. While the options listed primarily represent Western orchestral percussion instruments, in various cultures around the world different types of drums have played the role of announcing significant happenings.