Here are the correct answers for your questions based on historical context:
Question 1:
Feudalism was an effective protective measure against Germanic tribes.
Question 2:
As the need for protection gradually decreased, feudalism was replaced by monarchs who ruled by laws and legal precedent. Eventually, Parliament became more powerful than the monarch.
Question 3:
coastal territories
Question 4:
Pyrenees Mountains to the north, Mediterranean Sea to the east, Atlantic Ocean to the south, and Portugal to the west.
Question 5:
Peasants needed protection and land, which the lords provided.