Complex sentence: After the fall of Napoleon, Austria once again takes control of the island for 100 years, during this time we see the rising economy on the island with olive trees, sage, and other plants becoming key to the success of the island.
Split into simpler sentences: After the fall of Napoleon, Austria once again takes control of the island for 100 years. During this time the economy developed with olive trees, sage, and other plants becoming key to the success of the island.