A recent example of checks and balances is the Courts’ check and balances on President Trump’s immigration policy. This is when a federal judge in Washington issued an injunction against his visa executive order and thus preventing visa restrictions from taking effect
Some of the improvements made to constantinople as a result of justinians public works projects are bridges, public baths, parks, roads, hospitals, hagia sophia or as called as grand cathedral. In addition, justinian was required to reconstruct constantinople when the city zones were abandoned when fighting in the hippodrome fell into the streets and intensified into a insurgence.
A competitive market, should be your correct answer. Hope this helps:)