By Deepa Seetharaman SAN FRANCISCO (Reuters) – Amazon.com Incs revenue grew more than expected for the first quarter, largely offset by a sharp increase in spending on technology, content and new warehouses as the e-commerce company branches into new businesses. Amazons international unit, which accounts for 40 percent of sales, continued to be a drag as sales growth slowed to 18 percent during the quarter. Global unit sales, a closely watched measure of how many items Amazon has sold, also decelerated, rising only 23 percent. A lot of the things that weve done – making sure that we have the right pricing in place on behalf of the customers, making sure that our service levels are where we need them to be – those are the things we continue to work on in China, Chief Financial Officer Tom Szkutak said during a conference call.