This document provides brief summaries of key facts about several U.S. states: California became a territory in 1847 and a state in 1850, sparking the California Gold Rush; Oregon's territory was settled by a treaty in 1846 and relies on agriculture and lumber; Hawaii was discovered by the English and remained native-ruled for years before being annexed by the U.S. in 1959; and New York became a state in 1788 and is home to New York City and its extensive subway system.