By Brieanna Charlebois First Nations leaders and delegates from around British Columbia are slated to attend a ratification feast on Friday that will officially bring the Heiltsuk Nation’s written constitution into effect. Marilyn Slett, the nation’s elected chief, called it a “monumental day” that comes after two decades of development and consultation. “It’s hard to put into words how big it is. It’s definitely a day of celebration and reflection on everything that brought us to the day,” Slett said of the feast, which is scheduled to begin at 3 p.m. The Heiltsuk Nation approved the adoption of a written constitution for the First Nation on British Columbia’s central coast in February. That followed six months of engagement with more than 2,000 Heiltsuk members in Bella Bella, Nanaimo and Vancouver….