In this chapter, we studied the Egyptian, Chinese, Roman, Babylonian, Mayan, and Greek numeration systems in addition to our own Hindu-Arabic number system. Please research and respond to at least two of the following topics:

• Which systems do/don't have a symbol for "zero"? If the system has a symbol for zero, what is it?
• What is the history of the development of our Hindu-Arabic symbol "0" for zero?
• Why is it important to have a symbol for zero? What confusion could arise in systems which don't have a symbol for zero? Please explain and give an example.

must contain at least 100 words.