Elizabeth Thomas owns a small farm and generates income by selling vegetables and meat at the local market. When she marries, her citizenship is incorporated into her husband's, and he now owns her farm and income. What describes this practice?

The answer is: Coverture

Explanation:

Coverture laws are old laws (that don't apply anymore) brought to the US by English colonists that for many years regulated women's lives in many states. Coverture laws were part of British common law. Coverture laws stipulated that a married woman was a sole legal entity with her husband.