The correct answer is: "True".
Erosion is the continuous deposition of land. The coast is constantly exposed to erosion by the sea. Besides protecting areas for human habitation, seawalls help protect the coastline from erosion. However, they receive all of the force from the sea. This does affect its structure and will eventually need constant maintenance throughout time. This normally leads to high costs involving these activities.
Firstly the United States of America told the president of USSR that they were getting wrongly involved with Afghanistan and they should immediately withdraw. On falling in deaf ears, the United States did not participate in 1980 Summer Olympics that was held in Moscow. After this the United states started supplying arms to the various Afghan resistance groups.
