In the 6th century the Etruscans<span> expanded their influence over a wide area of Italy. They founded city-states in northern Italy, and to the south, their influence expanded down into Latium and beyond. Early </span>Rome<span> was deeply influenced by </span>Etruscanculture (the word "Rome<span>" is </span>Etruscan<span>).</span>
It really all comes down to money.
The perfect illustrative example of this would be the Department of Education. States have the power to enact their own education policies and nowhere is education laid out as a federal duty. And yet, a Federal department exists.
They enter by setting policies and giving enough money to the States to follow the federal policies.
Spain does not have a coast on the Pacific Ocean. Spain has coasts on the Atlantic Ocean, the Mediterranean Sea, and the Cantabrian Sea.
They lived by trading, farming of grapes and olive oil, and fishing. I hope that help.