4. The Aztecuse of the calendar and the Maya writing system both illustrate that pro- Columbian cultures in the Americas - flourished prior to European contact converted others to lslam traded extensively with Africa declined because of invasion and disease

## Step 1<br />The problem statement about the Aztec use of the calendar and the Maya writing system, both of which are examples of pre-Columbian cultures in the Americas. The task is to identify the correct interpretation of these examples.<br /><br />## Step 2<br />The Aztec calendar and the Maya writing system are both examples of the advanced knowledge and cultural practices of pre-Columbian civilizations. These civilizations were highly developed and had a rich cultural heritage before the arrival of Europeans.<br /><br />## Step 3<br />The other options, such as converting others to Islam, trading extensively with Africa, or declining because of invasion and disease, do not accurately reflect the historical context of these civilizations. The Aztecs and Mayas did not convert others to Islam, nor did they trade extensively with Africa. They also did not decline because of invasion and disease; in fact, they were quite advanced and prosperous before the arrival of Europeans.