6. Which of the following inventions and innovations were developed and used by the Incas, Aztecs and Mayans. Select THREE answer choices: D Used Lateen Sals Developed a monothesic nights Used Chinampas Developed steel tools D Quipu record keeping Developed the Glyph writing system

## Step 1<br />The question asks us to identify three inventions and innovations that were developed and used by the Incas, Aztecs, and Mayans. <br /><br />## Step 2<br />The Incas, Aztecs, and Mayans were all pre-Columbian civilizations in the Americas. They had different technological advancements and cultural practices.<br /><br />## Step 3<br />The Incas used Quipu, a system of knotted strings, for record-keeping. This was a unique method of record-keeping that was not used by the Aztecs or Mayans.<br /><br />## Step 4<br />The Aztecs used Chinampas, which were small, rectangular gardens built on shallow lake beds. This was a unique agricultural practice that was not used by the Incas or Mayans.<br /><br />## Step 5<br />The Mayans developed a Glyph writing system, which was a form of writing using symbols. This was a unique form of writing that was not used by the Incas or Aztecs.<br /><br />## Step 6<br />The other options, such as the use of Lateen Sails, the development of monotheistic religions, and the development of steel tools, are not accurate descriptions of the technological advancements and cultural practices of these civilizations.