 Mexico produced important cultural achievements during the colonial period, like the literature of Sor Juana Inés de la Cruz and Ruiz de Alarcón, as well as cathedrals, civil monuments, forts and colonial cities such as Puebla, Mexico City, Querétaro, Zacatecas and others, today part of Unesco's World Heritage.The syncretism between indigenous and Spanish cultures gave rise to many of nowadays Mexican staple and world-famous cultural traits like tequila (since the 16th century), mariachi (18th), jarabe (17th), charros (17th) and the highly prized Mexican cuisine, fruit of the mixture of European and indigenous ingredients and techniques.American-born Spaniards (creoles), mixed-race castas, and Indians often disagreed, but all resented the small minority of Iberian-born Spaniards who monopolized political power.