What are the 2 main sources of income for the federal government

I believe the answer is sales and property taxes and fees

The two main sources of income for the Federal Government come from the taxes paid by individuals and the social insurances. On the one hand, the taxes paid by individuals based on their income, and, on the other hand, the taxes paid by social insurances which come from the payroll of individuals.  

in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

in the 1800s, locomotives powered by steam made transportation faster and cheaper. the resulting rapid growth of railroads led to the connection of the atlantic and pacific railroad in oklahoma city in 1897.

in the last years of the century, the improvement of steam-based engines the expansion and growth of railroads. this growth increased when the companies started to build and expand, such as the atlantic and pacific railroad, which connected new mexico with california, and missouri with oklahoma. many of these new networks were built in oklahoma, and these changes transportation henceforward.