Complex empires with bureaucracies developed.
<span>Advancements in navigation. The Gupta Empire were very advanced in the fields of technology, science and art. The scholar Aryabhatta calculated that a solar </span>year was 365.358, <span>he also calculated </span>pi<span> to the fourth decimal place at a </span>value of 3.1416. <span>Kings in the </span>Gupta empire<span> owned huge copper, gold, and iron mines, and made advancements in metalworking. </span>
The Federal Government receives finding from taxes coming out of salaries, which is called income tax. In the US especially, taxes contribute to the funding of Medicaid and social security benefits.
Answer:
I would Guess B submarines
Explanation: