It "is no gimmick, and nobody will ever be elected to major office again without presenting themselves well on it."—nixon campaign consultant roger ailes, 1968

the quote is in reference to the

The quote is in reference to the television.  

Explanation:

The first presidential debate to be televised ushered in a new era in the US election campaign. Those who watched the debate on television thought Kennedy won, those who listened on the radio gave Nixon the victory. Kennedy would eventually win the elections. However, Nixon gave a speech in which he confirmed the importance of television in political campaigns from that day forward. In his speech, Nixon referred to television when he said "is no gimmick, and no one will ever be elected to major office again without presenting themselves well on it."

he impacted the society ith his knowwdge and advance our research by years to come

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.