Answer:
It began its development with the velocipedes or bone-shakers of the nineteenth century, so it has a 200-year pedigree.
Yet even then riding was still unaffordable for the great majority of people, and it would take many years before bikes became cheap enough for all.
Explanation:
Compound sentences are sentences that consist of two or more independent clauses connected by a comma and conjunction or by a semicolon. There are only seven coordinating conjunctions:<em> for, and, nor, but, or, yet, </em>and <em>so.</em>
An independent clause is a clause that can stand alone as a sentence. Every sentence must contain a subject and predicate and express a complete thought. Unlike independent clauses, dependent (subordinate) clauses don't fulfill these criteria, which is why they can't stand alone as sentences.
This means that you need to choose sentences that consist of more than one independent clause and no subordinate clauses. These sentences are:
- <u>It began its development with the velocipedes or bone-shakers of the nineteenth century</u>, so <u>it has a 200-year pedigree</u>.
- <u>Yet even then riding was still unaffordable for the great majority of people</u>, and <u>it would take many years before bikes became cheap enough for all.</u>
The underlined parts are independent clauses that make up these sentences.