As time passed and the system grew, the scope of the program and the nature of the designations evolved. By the 1930s, the focus of the heritage movement in Canada had shifted from commemoration to preservation and development. The change was most marked in Ontario, where the Niagara Parks Commission was restoring Fort George and the Department of Highways was restoring Fort Henry. It took the Great Depression to create opportunities for significant heritage preservation projects at the federal level. Although the HSMBC took little interest in these efforts, limiting itself to a commemorative role, the Parks Branch made wide use of government relief funds to hire workers to assist with the restoration of old forts.