Washington (AFP) – A high-stakes court battle between Elon Musk and Twitter began Tuesday in Delaware, a tiny slice of America’s east coast best known as the nation’s oldest state. Yet it’s also the legal home for many corporations, drawn by its reputation as a tax haven and expertise in settling business disputes. Here’s a closer look at Delaware: Fortune 500Twitter chose in 2007 to incorporate in Delaware, less than two hours’ drive northeast of Washington, instead of California, where the social network has its headquarters. The one-to-many messaging platform is not alone: beverage giant Co…