Being the oldest and most effective original telegram, beacon towers are
the most important component of the defensive project on the Great
Wall. They are built continually to pass military messages. In ancient
times, if intruders approached, soldiers on the wall would create smoke
in the daytime and light a fire at night to warn their troops.
Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.
Answer:
Iran and the United States have had no formal diplomatic relations since April 1980. Pakistan serves as Iran's protecting power in the United States, while Switzerland serves as the United States' protecting power in Iran.
Explanation:
Answer:
C . east and west coasts of the united states
Explanation:
