Answer:
Laura Bush was an active first lady: She advocated for women’s health and promoted education.
Step-by-step explanation:
Laura Bush was an active first lady: She advocated for women’s health and promoted education is an example of the use of a colon instead of a semicolon between independent clauses. The second sentence explains, illustrates, paraphrases, or expands information given in the first sentence. There is no definite agreement as to whether or not the first word of the second sentence should be capitalized. Usually, if the information in the second sentence is closely related to information from the first, the capital is not used. If the second sentence is a general or formal statement, many writers and editors decide to capitalize the first word. In the given example, the writer decided to capitalize the word she, although others may have done the opposite.