Answer:
1. lining the canyons arrow to the ruins
2. dating from the thirteenth century
arrow to they remain a wonderful sight.
3. known as pueblos
arrow to the ruins
4. developing their skills
arrow to the people
5. working hard
arrow to the people
6. started in A.D. 920
arrow to Chaco Canyon's Pueblo Bonito
7. connecting each level
arrow to ladders
8. using dry land farming
arrow to The Anasazi
9. lasting for many years
arrow to drought
10. abandoning these homes
arrow to the Anasazi
Step-by-step explanation:
a principal phrase is defined as a phrase that is used as an adjective but looks like a verb- so it would describe the subject (noun) of the sentence. (look for -ing words most of the time; lasting, using, connecting, or other action words like started, known as)
hope this helps!