This exposed the threat of western influence on the soviet union

Ans:

When culture develops and become more strong,as compared to other cultures then people around the globe are attracted towards such culture.Even if they are enemies. And that is what happened between the west and the soviet union in the mid 1980's as it were the first time in which western acts were allowed to tour in the U.S.S.R. and even in Soviet Russia itself.

Explanation:

The Western Music and Culture And Downfall of U.S.S.R:

At the time when Mikhail Gorbachev was the General Secretary of the soviet union. The volatility of international oil market and the ups and downs in agriculture business made it very hard for the Soviet Union to develop.

As the General Secretary of soviet union wanted reforms and he did some, which brought the west and the soviet union much closer then ever. As the people from that region fell in love with the western culture as they enjoyed western music and had concerts arranged for the western artists to come and perform.

As Mikhail Safonov states, “when a person had educated himself in the culture of the Beatles, he found he could no longer live in lies and hypocrisy” (Safonov).

They loved the music and dance, it was a new day for them.

Resistance from the Soviet Union-

But there was a response from the leaders and the political parties, as they started campaigning against the western music.A “blacklist” of banned (or “not recommended”) musical groups, formally titled as “The approximate list of foreign musical groups and artists whose repertoires contain ideologically harmful compositions”, was regularly updated and disseminated by the Komsomol, the Communist Party’s Youth Wing((The Scotsman).

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the right answer for the question that is being asked and shown above is that: "their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.  " the  participant in european imperialism is being described below is that  their policy of "divide and rule" pitted political groups against each other to keep any one group from becoming too powerful.