This Day In History: August 21

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The modern United States receives its crowning star when President Dwight D. Eisenhower signs a proclamation admitting Hawaii (Native spelling: Hawai‘i) into the Union as the 50th state. The president also issued an order for an American flag featuring 50 stars arranged in staggered rows: five six-star rows and four five-star rows. The new flag became official July 4, 1960.

The first known settlers of the Hawaiian Islands were Polynesian voyagers who arrived sometime in the 8th century. In 1778, explorer James Cook became the first documented European to arrive on the islands. In the mid 1830s, the first sugar plantation was established on Kauai, and the industry would expand throughout the century. Increasingly, missionaries and planters came to occupy the islands and brought about massive changes in Hawaiian political, cultural, economic and religious life. In 1840, a constitutional monarchy was established, stripping the Hawaiian monarch of much of his authority.

In 1893, a group of American expatriates and sugar planters supported by a few hundred U.S. Marines deposed Queen Liliuokalani, the last reigning monarch of Hawaii. One year later, the Republic of Hawaii was established as a U.S. protectorate with Hawaiian-born Sanford B. Dole as president. Many in Congress opposed the formal annexation of Hawaii, and it was not until 1898, following the use of the naval base at Pearl Harbor during the Spanish-American War, that Hawaii’s strategic importance became evident and formal annexation was approved. Two years later, Hawaii was organized into a formal U.S. territory. During World War II, Hawaii became firmly ensconced in the American national identity following the surprise Japanese attack on Pearl Harbor in December 1941.