Chinese leader who tried to unite China and wipe out communism
John Kennedy
Mao Zedong
Nikita Khrushchev
Martin Luther King, Jr.
Chiang Kai-shek

The correct answer is E. Chiang Kai-Shek

Explanation

Chiang Kai-shek was a Chinese leader of nationalist ideology who ruled China dictatorially since 1927, his leadership was characterized by a radical motivation to implement policies based on Confucius thoughts and distribute power among his family and friendly families. Since the 1930s, he faced the communist movement led by Mao Zedong, who created his communist republic in Yenan province. Towards the year 1949, the communists' territorial expansion forced Chiang to withdraw and go to Taiwan with his supporters. From there he always hoped to reunify the entire territory of China and wipe out Communist, however, he died without fulfilling this dream in 1975. So, the correct answer is E. Chiang Kai-Shek

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.