A crowded area with run-down housing and high poverty
Sampling, mark and recapture, indirect observation, and direct observation
Answer: The yellow river is located at (LETTER B) The structure built to keep out the northern barbarians was called the (Great Wall) and is located at (LETTER C) The Silk Road is located at (LETTER A)
Explanation:
Congress would not ratify the SALT II treaty because D) The Soviet Union invaded Afghanistan and C) Russian combat troops were found in Cuba. Because of these two reasons Congress did not ratify the treaty. Six months after signing the treaty, the Soviet Union invaded Afghanistan and the United States discovered that there was a Soviet Union brigade stationed in Cuba which led to the treaty not being ratified.
The answers are: 1. A 2. D 3. A
