30. Inca 31 . suspension bridge 32. census Choose a submission type square square

30. Inca: The Inca were a civilization that existed in South America, primarily in present-day Peru, from the 13th to the 16th century. They were known for their advanced engineering skills, including the construction of roads, bridges, and buildings. The Inca also had a complex social and political system, with a centralized government and a strong emphasis on agriculture.<br /><br />31. Suspension bridge: A suspension bridge is a type of bridge that uses cables or chains to support the weight of the bridge deck. The cables or chains are attached to anchorages on either side of the bridge, and the bridge deck is hung from the cables or chains. Suspension bridges are often used in areas where other types of bridges would be difficult or impractical to construct, such as over deep valleys or rivers.<br /><br />32. Census: A census is the process of collecting and recording information about a population. This information can include demographic data, such as age, gender, and occupation, as well as economic data, such as income and employment. Censuses are typically conducted by governments or other organizations, and the data collected is used for a variety of purposes, including planning and resource allocation.