Complex sentence: This is a survey of the postage stamps and postal history of Seychelles, an 115 island nation spanning an archipelago in the Indian Ocean, some east of mainland Africa, northeast of the island of Madagascar.
Split into simpler sentences: This is a survey of the postage stamps and postal history of Seychelles. The Seychelles is a 115 island nation spanning an archipelago in the Indian Ocean, some east of mainland Africa, northeast of the island of Madagascar.