Solve these clues to fill the grid.
- A country person (plural)
- 3 Across
- The private ___ of the popes in Rome
- 6 Across
- A statesman of Florence who advocated a strong central government
- 9 Across
- The commercial exchange of goods and services
- 11 Across
- Florentine sculptor and painter and architect
- 12 Across
- A city in central Italy on the Arno
- 13 Across
- Polish astronomer who produced a workable model of the solar system with the sun in the center
- 15 Across
- English mathematician and physicist
- 16 Across
- A ___ consisting of a sovereign ___
- 1 Down
- A person hired to fight for another country than their own
- 2 Down
- Having the sun as the center
- 4 Down
- Someone who is not a clergyman or a professional person
- 5 Down
- German printer who was the first in Europe to print using movable type and the first to use a press
- 7 Down
- Return to an original state
- 8 Down
- Shepherd boy who defeated Goliath
- 10 Down
- After death the soul begins a new cycle of existence in another human body
- 14 Down