What is a synonym of sustain

Comfort, assist, support.

Explanation:

Any of these are synonyms to Sustain.

the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

the structure of state governments are determined by. "state constitutins'

under the us constitution, all state governments are.'republics'