I’m not entirely sure I think the answer is c
Erosion helps it move from place to place and deposition drops it
It confirmed public concerns about relationships between buisness and the harding administration
Answer:
The Collapse of the Soviet Union. ... Gorbachev's decision to loosen the Soviet yoke on the countries of Eastern Europe created an independent, democratic momentum that led to the collapse of the Berlin Wall in November 1989, and then the overthrow of Communist rule throughout Eastern Europe.
Explanation:
Dear Ma'am/Sir You Didn't add a photo so I can't answer your question correctly.