October was a busy month for mergers and acquisitions. The highlights include the largest technology acquisition in history, with Dell buying EMC (EMC +0.00%), Walgreens Boots Alliance (WBA +0.00%) and Rite Aid (RAD +0.00%) combining to form a drugstore behemoth, and Western Digital (WDC +8.74%) taking out SanDisk (NASDAQ: SNDK).
Click through the following slideshow to see an overview of five of the most important acquisitions that took place in October, including Pandora's (P +0.00%) entry into online ticket sales and the combination of snack-food companies Snyder's-Lance (LNCE +0.00%) and Diamond Foods (DMND +0.00%).