Answer:
Social Security and National defence.
Step-by-step explanation:
The US federal budget consists of the mandatory expenditures such as social security, medicare, discretionary spending and Cabinet departments discretionary spending . It is also spent on agencies such as securities and exchange commissions and interest payments.
During financial year 2018 the federal government spent more that four trillion while the spending in 2017 was approximately four trillion. The highest spending was for social security, defence and debt.
The expenditures were divided into two categories: Mandatory and Discretionary. The mandatory expenditures which were mandatory as per the law and was given to those who met eligibility criteria e.g Medicare and Social Security. The discretionary expenditures renewed each year e/g Defence