Hi there.
I believe the answer you are looking for is
Printing Press
Answer:Command economies are characterized by large surpluses and shortages, monopolies, and prices set by the government. Mixed economies are characterized by corporate profitability, the use of fiscal and monetary policies to stimulate growth, and the existence of a public and private sector.
Explanation:
<span>The Jazz Singer (1927) is historically significant because it featured several scenes with synchronous dialogue.
Synchronous sounds refer to any sounds whose origin can be seen on screen. So, if people are talking, you will see where the words are coming from. This is something that hadn't been done prior to the filming of The Jazz Singer, which was revolutionary.
</span>
last one is the answer probably
