The word -that in the third paragraph refers to ............

Stars have been significant features in the design of many United States coins and their number has varied from one to forty-eight stars. Most of the coins issued from about 1799 to the early years of the twentieth century bore thirteen stars representing the thirteen original colonies. Curiously enough, the first American silver coins, issued in 1794, had fifteen stars because by that time Vermont and Kentucky has joined the Union. At that time it was apparently the intention of mint officials to add a star for each new state. Following the admission of Tennessee in 1796, for example, some varieties of half dimes, dimes, and halfdollars were produced with sixteen starts. As more states were admitted to the Union, however, it quickly became apparent that this scheme would not prove practical and the coins from A798 on were issued with only thirteen stars-one for each of the original colonies. Due to an error at the mint, one variety of the A828 half cent was issued with only twelve stars. There is also a variety of the large cent with only A2 stars, but this is the result of a die break and is not a true error. 

What is the main topic of the passage?

What does the passage mainly discuss?

Why does the author mention "artistic, political, or pedagogic communication" in line 14-15?

According to the passage, an overconfident front may hide ...............

What does the author mean by staring that, "At interpersonal levels, tone may reflect ideas and feelings over and above the words chosen" in lines 8- 9?

Which of the following is NOT true according to the passage?

The word "others" in paragraph 3 refers to ................

According to the passage, what did Carson primarily study at Johns Hopkins University?

What can be the best title of the reading passage?

The word ‘monumental’ in Paragraph 2 means ..............