The provided text is an excerpt from a Wikipedia article focusing on Crown Castle, an American real estate investment trust specializing in shared communications infrastructure. The source offers a detailed history of the company, beginning with the separate founding of Crown Communications (1980) and Castle Tower (1994) before their 1997 merger to form Crown Castle International. Key milestones discussed include major acquisitions and asset sales, such as the purchase of Global Signal Inc. and the divestiture of its UK and Australian subsidiaries, transitioning the company to a domestic-exclusive firm after 2015. Additionally, the text highlights Crown Castle's substantial network, which includes over 40,000 cell towers and 85,000 route miles of fiber, while also listing crucial financial and operational data from 2020.