Solve these clues to fill the grid.
- A member of the nomadic peoples of ___ (plural)
- 3 Across
- Extensive plain without trees
- 4 Across
- A piece of ground having specific characteristics or military potential
- 6 Across
- A practical method or art applied to some particular task
- 7 Across
- The act of invading
- 9 Across
- The set of values of the independent variable for which a function is defined
- 10 Across
- Imposing in size or bulk or solidity
- 12 Across
- Marked by extreme and violent energy
- 1 Down
- Something intended as a guide for making something else
- 2 Down
- Showing inventiveness and skill
- 5 Down
- Someone engaged in or experienced in warfare (plural)
- 8 Down
- A sequence of powerful leaders in the same family
- 10 Down
- Country in Asia with the Great Wall
- 11 Down
