It is important to use a variety of digital material in a presentation so that it
1.) appears that an expert authored it.
2.) holds the audience interest
3.) builds the case more effectively
4.) needs less effort in the written portion.

Existing to a lot of people

Tenochtitlán was the capital of the aztec empire. it was a busy and bustling city where“there are daily more than 60,000 souls, buying and selling, and where are found all the kinds of merchandise produced in these countries.” when cortes arrived in 1519, theenormity of the trading market and the smoothness of it’s running both surprised and  impressed him.