By spring 1949, the Berlin Airlift proved successful. The Western Allies<span> showed that they could sustain the operation indefinitely. At the same time, the Allied counter-blockade on eastern Germany was causing severe shortages, which, Moscow feared, might lead to political upheaval.</span>
Answer:
Physical barrier
Explanation:
A physical barrier is any barrier to communication that is caused by a natural and/or environmental condition and affects how the communication when sending a message to a receiver. In this case, the noise from the people talking behind Raul acts as a environmental condition and is affected the way in which information from the speaker gets to Raul.
I believe the answer is:
《Biblical allusions》
hope this help.