What methods and tools did darius use to hold together his empire?

Why would the saudi’s oil industry need a large investment in human capital

What was the national government’s biggest concern if facing a war, under the articles of confederation? the national government had no national military. the country had grown too large to defend with a small army. the states would not back the federal government. there was no way the states would pay for fighting a war.

Brainliesttt !me : ) describe the conflict and changes in israel: