He made an invention or experiment for some type of wave and he tested it. So that's basically why he is famous.
The split into the two groups called the <span>patricians and plebeians.</span>
Creoles were people of Spanish heritage who were born Latin American.
<span>a)groups of militant university and high-school students formed into paramilitary units to help Mao combat his enemies
'learn revolution by making revolution'</span>
