Which rule should be followed to stay safe online? #1. Keep an appropriate messages private.
#2. Avoid sharing photos with anyone online.
#3. keep screen names private.
#4. ask an adult for permission to download.

economic competition is inefficient and wasteful.good luck

explanation:

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

i'm asking the same thing i asked this other cat all of

we need the chart or check box