Answer:

1.) subsidies- The Romans supported him with subsidies; but all his wars were disastrous.

2.) subsidize- The company subsidizes health insurance for its employees.

3.) testify- He was going to testify as a witness for the murder of his wife.

4.) Unit- Feet and meters are units of length.

5.) Well-Tended- The path was now plain before them, well-tended and bordered with stone.

6.) watershed- The line of the highest summits and of the watershed ranges is about 30 to 40 m.