Complex sentence: This, by the time I was not real, however, after he saw reason and he withdrew his theory of invasion of the island, British General Oglethorpe tried to do exactly that in 1739.
Split into simpler sentences: This, by the time I was not real. However, after he come to reason and he withdrew his theory of invasion of the island, British General Oglethorpe tried to do exactly that in 1739.