Mergers and takeovers are again the order of the day. In North America, Europe, Australia, Africa and East Asia, firms try to combine, to take over, and to cooperate in joint-ventures. The combination phenomenon has risen spectacularly during the past few years. The European Community Competition Policy Reports also document an appreciable rise in acquisitions of minority holdings and in joint ventures, both of which have more than doubled during the past six years. This evidence, which could easily be multiplied, points towards one general characteristic of the merger and takeover phenomenon: mergers, takeovers and other combinations occur in waves, and each of these waves has its radiations throughout the economically relevant world.