Concrete masonry units (CMU) are some of the most commonly used materials in building construction. Due to their relatively low cost as wall material and their fire resistance, CMU walls are laid on many types of projects. From schools to warehouses, many buildings have CMU walls.
History >> Native Americans for Kids. The Inuit people live in the far northern areas of Alaska, Canada, Siberia, and Greenland. They originally made their home along the Alaskan coast, but migrated to other areas. Everything about the lives of the Inuit is influenced by the cold tundra climate in which they live.
The Inuit people of Northern Canada built them. Igloos were never permanent houses for the Inuit. Instead, a large igloo might house one or more families in the cold winter months. Tent-like houses sheltered those same families in the summer.