Taxing Citizens - The Legislative arm of government is responsible for making tax laws.. . Building and Maintaining Roads - This Executive arm of government is responsible for building and maintaining roads. Though some of these projects are funded by the Federal government, the responsibility of building is on the State governments. but can be delegated to counties, cities and towns. . Pushing citizens for crimes - The judiciary arm of government is responsible for interpreting the law and giving verdicts on legal consequences of crimes.