Answer: drought making he soil less compact
Explanations
The farmers keep growing the same crops, the crops the were growing were making the soil weak.
1. 1970 (having an 11.04% rate of inflation)
2. Increased involvement in the Vietnam War, Great Society programs fully in effect.
"The late 1960's increase in inflation was due to the increase of taxes, increase the issuance of currency and cutting public expenditures, in the Lyndon B Johnson government, in order they could meet the military expenses they where having at that moment thanks to the Vietnam war."
3. Consumers lose purchasing power with inflation forcing them to buy less.
"If there is an increase in inflation but not in salary, the amount of earnings will not be powerful enough overtime, which means American consumers would be needing more money to satisfy their daily requirements."
Rightness. the answer is rightness<span />
"The tenets state that <span>Japan shall neither possess nor manufacture nuclear weapons, nor shall it permit their introduction into Japanese territory"
</span>
So the Three Non Nuclear Principles were intended to keep Japan from using and making nuclear weapons.
