I believe the answer is Signing the Rush-Baggot Agreement
a. tariffs: to protect domestic industry.
b. anti-fraud laws: to guarantee free choice.
c. environmental protection laws: to safeguard natural resources.
Tariffs are taxes that are placed on imports between states. They are often used as a way to protect domestic industry.
A fraud is a deliberate deception to secure some legal gain, or to deprive a victim of a legal right. Anti-fraud laws are passed to prevent and punish this type of behaviour.
Environmental protection laws are those that are created in order to protect natural ecosystems from human destruction.
The people of the Indus Valley. Some of them were farmers. They grew crops like barley, peas, wheat, dates, and melons. The farms were not just for , some grew cotton and raised sheep, pigs, and cattle. Every town had its own storage building to hold what that town needed.