Big business involves large-scale corporate-controlled financial or  business activities. As a term, it describes activities that run from "huge transactions" to the more general "doing big things". The concept first arose in a symbolic sense after 1880 in connection with the combination movement that began in American  business at that time. United States corporations that fall into the category of "big business" include ExxonMobil, Wal-Mart, Google, Microsoft, Apple, General Electric, General Motors, Citigroup, Goldman Sachs and JPMorgan Chase. The largest German corporations included Daimler AG, Deutsche Telekom, Siemens and Deutsche Bank. Among the largest companies in the United Kingdom are HSBC, Barclays, WPP plc and BP. The latter half of the 19th century saw more technological advances and corporate growth in additional sectors, such as petroleum, machinery, chemicals, and electrical equipment. (See Second Industrial Revolution.)