Which Greek city-state did the Persians invade?

The greek city state the persians invaded was Athens

The electoral college consists of 538 electors. a majority of 270 electoral votes is required to elect  the president. your state's entitled allotment of electors equals the number of members in its congressional delegation: one for each member in the house of representatives plus two for yoursenators.congress does the electoral college represent

Sector is best defined as (part).