Why do you think chandragupta maura be believed it was necessary to maintain a spy network in his empire

He was building an empire the size of Modern-Day India, so it was necessary to have a spy network in his empire so that his empire does not fall apart.

"they had a large area of land that they owned."

to replace ineffective because   andrew jackson's spoil system was a deliberate policy after he became president to remove federal employees he considered to be political opponents and replace them with his own supporters.