OTTAWA — Prime Minister Mark Carney and Canada’s premiers huddled in a meeting room in Ottawa on Thursday, under the long shadow of the upcoming negotiations on renewing North America’s key free trade agreement. Just ahead of the meeting, Carney said the day’s talks will focus “on what we can control.”The prime minister said he and the premiers will discuss ways they can work together to forge new international trade partnerships and attract domestic investment. “As we’re building new partnerships abroad, we’re focused on building our strength at home and transforming our economy,” Carney said while opening the meeting Thursday. Kicking off the meeting, Carney thanked the premiers for working to reduce interprovincial trade barriers in their jurisdictions, but added more can be done. Premiers are looking to present a united “Team Canada” front, though ongoing interprovincial disagreements are causing some tension.