Which of the following actions by darius strengthened the persian empire by encouraging trade select all that apply (2 answers)

a) encouraged use of coins
b) set up express mail delivery
c)set up common weights and measures
d) expanded the barter economy

Along-run equilibrium occurs when long-run aggregate supply and aggregate demand meet. what does having long-run equilibrium indicate about a society? the society’s supply and demand have stagnated. the society is using all of its resources efficiently. the society’s needs are being fully met. the society is not using all of its resources effectively.

What day and year did kennedy die?

:) during the cold war, people were afraid of communists, both outside and inside the united states. the red scare and mccarthyism that grew out of these fears were damaging to the american way of life. during the mccarthy years, many of the freedoms guaranteed in the bill of rights were limited. write a paragraph explaining what lessons can be learned from the mccarthy era about what u.s. citizens need to protect in order to preserve the democratic political system and the american way of life.