Final answer:
John Locke and Montesquieu were both concerned with protecting citizens' rights, emphasizing natural rights and the separation of powers to prevent government corruption.
Step-by-step explanation:
John Locke and Baron de Montesquieu were both concerned about citizens' rights. Locke advocated for the natural rights of life, liberty, and property and believed that if a government failed to protect these rights, the people had the right to overthrow it. This was described in his work Two Treatises of Government. Moreover, Montesquieu proposed a separation of powers within government to prevent corruption and protect the citizens' liberties, as evident in his preference for a constitutional monarchy where power was shared between Parliament and the monarch. Both thinkers were instrumental in shaping modern democracy and the concept of a social contract, wherein the government's role is to serve the people, not to rule over them as divine monarchs do.