Slavery was abolished in the British Empire in 1833, thirty years before the Emancipation Proclamation in the United States. But even after they freed their slaves, the sugar plantation owners were desperate to find cheap labor to cut cane and process sugar. So the British owners looked to another part of the empire—India—and recruited thousands of men and women, who were given five-year contracts and a passage back. –Sugar Changed the World,
Marc Aronson and Marina Budhos

Which excerpt from the passage provides evidence of a chronological structure?

“Slavery was abolished . . . thirty years before the Emancipation Proclamation.”
“The sugar plantation owners were desperate.”
“So the British owners looked to another part of the empire.”
“Thousands of men and women . . . were given five-year contracts.”