Complex sentence: By 1897, it was said to have more than eight million followers in the United States and Europe, mostly drawn from the middle and upper classes, while the corresponding movement in continental Europe and Latin America is known as Spiritism.
Split into simpler sentences: By 1897, it was said to have more than eight million followers in the United States and Europe, mostly drawn from the middle and upper classes. The corresponding movement in continental Europe and Latin America is known as Spiritism.