Istanbul in the 1970s, as people from Anatolia migrated to the city to find employment in the many new factories that were built on the outskirts of the sprawling metropolis. This sudden, sharp rise in the city's population caused a large demand for housing, and many previously outlying villages and forests became engulfed into the metropolitan area of Istanbul. Istanbul is located in north-western Turkey within the Marmara Region on a total area of . The Bosphorus, which connects the Sea of Marmara to the Black Sea, divides the city into a European, Thracian side—comprising the historic and economic centers—and an
Rosario Strait the "Princesa Real", gave the name Boca de Fidalgo, in honor of Salvador Fidalgo, to Rosario Strait, which was thought to be a bay. In 1791 José María Narváez renamed it Canal de Fidalgo after determining it was a strait. Also in 1791 Francisco de Eliza gave the name Gran Canal de Nuestra Señora del Rosario la Marinera to what it now the Strait of Georgia. In 1792, George Vancouver explored the region and gave the Strait of Georgia its present name after King George III. He did not provide a name for Rosario Strait. In 1847 Charles Wilkes, during