Which individual or group best completes the diagram, which represents the hierarchal structure of the federal bureaucracy? a. the white house chief of staffb. congressc. cabinet secretariesd. independent regulatory agencies?

Cabinet secretairies

This shows the order of hierachal: the president, cabinet secretaries, and then the Executive department civil servants.

in 1803 the louisiana purchase took place, doubling the size of the country. by 1840 almost 7 million americans had migrated westward in hopes of securing land and being prosperous. the belief that settlers were destined to expand to the west is often referred to as manifest destiny.

explanation:

25. twelve tables

26. having important positions chosen by lot