The answer would the Columbian Exchange.
<em>The <u>Executive Branch</u> has a Governor.</em>
It would be "D. Express mail" that <span>guarantees next day delivery, although it should be noted that next day delivery can be arranged through other postal channels as well. </span>
Originally, Athens was ruled only by tyrants. Later, Solon changed autocracy laws: Athens' council would be elected by merit, not birthright. Eventually, Cleisthenes introduced the concept of a council of all the free male citizens: democracy was born!