What are the five biggest
expenditures of the us government

Social Security is the single largest mandatory spending item, taking up 38% or nearly $1,050 billion of the $2,736 billion total. The next largest expenditures are Medicare and Income Security, with the remaining amount going to Medicaid, Veterans Benefits, and other programs.

they made rome the dominant power in the mediterranean.

this isn't a question and if you're going to list things be kind and use commas.