When Startup Maryland kicks off March 30, it will be confronted with a challenge unique to this region’s three Startup America subgroups: How to bring life sciences and information technology — the state’s two major tech industries — under one banner. The pro-entrepreneurship effort introduced by President Obama in January is the last of the region’s trio to launch. Startup Virginia got under way Jan. 31 in Arlington, Va., with Startup D.C. following later that day. Nationwide, there are 17 Startup America regions.