Over the years that followed-and to this day-the presidents relied on, misunderstood, sabotaged, and formed alliances with one another that changed history. The world's most exclusive fraternity is a complicated place: its members are bound forever because they sat in the Oval Office and know its secrets, yet they are immortal rivals for history's favour. Some presidents needed...(展开全部)

Over the years that followed-and to this day-the presidents relied on, misunderstood, sabotaged, and formed alliances with one another that changed history. The world's most exclusive fraternity is a complicated place: its members are bound forever because they sat in the Oval Office and know its secrets, yet they are immortal rivals for history's favour. Some presidents needed...(展开全部)

Investment firm Y Combinator is the most sought-after home for startups in Silicon Valley. Twice a year, it funds dozens of just-founded startups and provides three months of guidance from Paul Graham, YC’s impresario, and his partners, also entrepreneurs and mostly YC alumni. The list of YC-funded success stories includes Dropbox (now valued at $5 billion) and Airbnb ($1.3 bil...(展开全部)