What does the phrase "culture clash" mean?

Among the main components of the British Constitution, ______ are the most important and take precedence over others if there is a clash.

A．fussB．clashC．hesitationD．pause A: fuss B: clash C: hesitation D: pause

He issued a statement to ______ the situation.  A: cluster B: clash C: clarify D: circus

中国大学MOOC: The novel Thing fall apart, setting in Nigeria at the end of the 19th century, is a postcolonial novel and a portrayal of culture clash.

19.The soldiers made a__________at the enemy. A: rush B: clash C: dash D: hurry

They heard the ________ of swords and immediately realized that the fighting began. A: clash B: crash C: crush D: collision

The college student caught cheating does not even _______.() A: flush B: blush C: flash D: clash

What has caused the change A: A schedule clash B: A mechanical problem C: A staffing shortage D: An administrative error

They are both very determined people, so there's rather ______ by personalities. A: debate B: disagreement C: contest D: clash