Final answer:
Indonesia has a complicated electoral system due to its ethnic diversity, large geographical size, and colonial history with a shift from authoritarian rule to democracy.
Step-by-step explanation:
Indonesia's electoral system is considered one of the world's most complicated due to a combination of factors, including ethnic diversity, geographical size, and its colonial history. The vast number of islands and the ethnic diversity contribute to the complexity, as the country must accommodate a wide range of local interests and languages in the electoral process. Additionally, Indonesia's colonial history, where it was known as the Dutch East Indies, has shaped its political and administrative systems, influencing the current electoral system. Indonesia's efforts to establish a democratic system after its independence from colonial rule in 1949, moving quickly from authoritarian rule, also plays a part in the complexity of its elections.