Probably 1, however I can see why that would be a tiny bit confusing.
Building walls protects from incoming invaders(at least back in the day), creating armies, makes a force to go and fight to protect the people, and what was the other one? Oh yea, moving to a safer place.
Doing that would mean making invasions less likely, and making your people feel and be safer.
Hope this helps.
Answer:
The looming issue of slavery under President Lincoln
Explanation:
The Southern Dems. who were largely slave owners fear'd that the Republican candidate Lincoln would take away there slaves, forcing them to hire labor for there plantations. The Raid on Harper's Ferry also increased Southern paranoia that more militia attacks like that could occur in the future, damaging there income. Due to the South's paranoia, the Battle of Fort Sumter took place, starting the Civil War!
Answer: Bypass strongly held Japanese islands
Explanation: Island hopping is moving from island to island whilst continuing to fight but also moving hastly.
I believe the answer is: C. Law enforcement officers are mainly required to uphold the law.
Because of this the scope of action which can and cannot be done by law enforcement is limited in a very strict regulation. If the law enforcement disobey this limitation, the suspect could even sue the law enforcement and all of the charge can be nullified.