The National Archives Learning Curve | British Empire | Rise of the British Empire | North America | Source 7 Home > Gallery > Case Study > Source Plans for Quebec citadel, 1767 (PRO ref: MPG 1/420) Study this source carefully. Different parts of the source will contain clues about why the British became empire builders in North America. As you study the source, ask yourself: ● ● ● A citadel is a fortress. Does this suggest that the planned fortress will be strong? What uses do you think the British would have for this fortress? Does this source provide any clues about the reasons why the British were in North America? Background | Worksheet Feedback | Credits | Sitemap | Help http://learningcurve.pro.gov.uk/empire/g1/cs1/g1cs1s7.htm Glossary | World Maps