WASHINGTON / AP Americans spent only slightly more last month at retail stores compared with January, a sign of consumer caution despite rising optimism about the economy. The Commerce Department said Wednesday retail sales ticked up a seasonally adjusted 0.1 percent in February, after a much bigger gain of 0.6 percent the previous month. January’s gain was revised higher. …

  Bloomberg After a decade-long hibernation following the dot-com crash, Canada’s Tucows Ltd. is roaring back to life with an acquisition and a deepening effort to win over disgruntled US mobile phone customers. The Toronto-based internet services provider is the largest re-seller and manager of domain names after Scottsdale, Arizona-based GoDaddy Inc. Its customers are firms like Squarespace Inc. and …

  Bloomberg Volkswagen AG’s Audi brand was raided by German prosecutors as investigations into the manipulation of diesel engines continue to weigh on the automaker more than a year after revelations of emissions cheating. More than 100 police took part in searches Wednesday at the company’s main sites in Ingolstadt and Neckarsulm as well as seven other locations across Germany. …