1.It was built entirely by hand.

2.Several Chinese states began to build walls for protection.
3.The Ming government began rebuilding the crumbling ruins in the fifteenth century, and much of their work remains today.
4.The wall is as high as thirty-five feet, and the width can reach twenty-five feet.

Identify the independent clause or clauses

1.It was built by hand.
2.Several Chinese states began to build walls.
3.The Ming government began rebuilding the crumbling ruins, and much of their work remains today.
4.The wall is as high as thirty-five feet, and the width can reach twenty-five feet.

For 1 and 2, each sentence is an independent clause.

For 3 and 4, each has 2 independent clauses. What are they?

The Ming government began rebuilding in the fifteenth century, and much of their work remains today.

The wall is high as thirty-five feet, and the width can reach twenty-five feet.

Please separate the independent clauses for 3 and 4 so we can tell if you understand.

The Ming government began rebuilding in the fifteenth century.

Much of their work remains today.

4.The wall is high as thirty-five feet.
The width can reach twenty-five feet

Correct.

1. "It was built entirely by hand."

2. "Several Chinese states began to build walls."
3. "The Ming government began rebuilding the crumbling ruins, and much of their work remains today."
4. "The wall is as high as thirty-five feet, and the width can reach twenty-five feet."

An independent clause is a group of words that can stand alone as a complete sentence. It expresses a complete thought and has a subject and a predicate.

In this case, all of the statements are independent clauses as they can function as complete sentences on their own.