Answer:
You can add how mirrors are made, when they were first invented and by who invented them.
All you have to do is restate your topic sentence but in a different way and make your point more clear.
The Fifteenth Amendment was important because it stated all United States citizens are treated equally with their right to vote, and fifteenth amendment prohibits federal and state governments to deny a citizen of the United States the right to vote based on their race or color
