An artifact, document, diary, manuscript, autobiography, recording, or any other source of information about the topic: Primary Source. Document or recording related to the topic: Secondary Source. A "land bridge" connecting Northeastern Asia to what is now Alaska: Beringia. Science or practice of farming: Agriculture. Laws written on wampum belts: Iroquois Great Law of Peace. A widely used method of growing food in which wild or forested land is clear cut and any remaining veggie burns. Resulting layer of ash provides the newly cleared land with a nutrient rich layer to help fertilize crops: Slash and burn agriculture. A tool weapon, or other object left behind by early peoples: Artifacts. A from of writing that uses symbols or pictures to represent things, ideas, and sounds: Hieroglyphics. To supply water to crops by artificial means: Irrigation. A ________ map focuses on the geography of the area : Physical Map. Used to represent the overall population in an area: Population Map. A modern map made to illustrate some past geographical situation or event: Historical Map. A map designed to show governmental boundaries of countries, states, and counties the location of major cities shows bodies of water: Political Map