1. Early 19th century: American missionaries arrived in Hawaii, bringing Western culture and religion.
2. Mid-19th century: American whalers and traders began to settle in Hawaii, attracted by the strategic location of the islands for trade and commerce.
3. Late 19th century: American sugar planters arrived in Hawaii and established large plantations, transforming the economy and society of the islands.
4. Early 20th century: American entrepreneurs and tourists began to visit Hawaii, attracted by the islands' tropical climate and beautiful scenery.