Slavery in the Spanish American colonies was an economic and social institution which existed throughout the Spanish Empire including Spain itself. In its American territories, Spain displayed an early abolitionist stance towards indigenous people although Native American slavery continued to be practiced, particularly until the New Laws of 1543. The Spanish empire, however was involved in the enslavement of people of African origin. Although the Spanish often depended on others to obtain enslaved Africans and transport them across the Atlantic, the Spanish Empire was a major recipient of enslaved Africans, with around 22% of the Africans delivered to American shores ending up in the Spanish Empire.The Spanish restricted and outright forbade the enslavement of Native Americans since the early years of the Spanish Empire with the Laws of Burgos of 1512 and the New Laws of 1542. The latter led to the abolition of the Encomienda, private grants of groups of Native Americans to individual Spaniards as well as to Native American nobility. The implementation of the New Laws and liberation of tens of thousands of Native Americas led to a number of rebellions and conspiracies by "Encomenderos" (Encomienda holders) which had to be put down by the Spanish crown. Asian people (chinos) in colonial Mexico had the same status as Native Americans and thus were forbidden to be enslaved by law.Spain had a precedent for slavery as an institution since it had existed in Spain itself since the times of the Roman Empire. Slavery also existed among Native Americans of both Meso-America and South America. The Crown attempted to limit the bondage of indigenous people, rejecting forms of slavery based on race. Conquistadors regarded indigenous forced labor and tribute as rewards for participation in the conquest and the Crown gave some conquerors encomiendas. The indigenous people held in encomienda were not slaves, but their under paid labor was mandatory and coerced, while they had rights and could take to trial to their managers, and they were "cared for" by the person in whose charge they were placed (encomendado), this might mean offering them the Christian religion and other perceived (by the Spaniards) benefits of Christian civilization. With the collapse of indigenous populations in the Caribbean, where Spaniards created permanent settlements starting in 1493, Spaniards raided other islands and the mainland for indigenous people to enslave on Hispaniola. With the rise of sugar cultivation as an export product in 1810, Spaniards increasingly utilized enslaved African people for labor on commercial plantations. Although plantation slavery in Spanish America was one aspect of slave labor, urban slavery in households, religious institutions, textile workshops (obrajes), and other venues was also important.Spanish slavery in the Americas diverged from other European powers in that it took on an early abolitionist stance towards Native American slavery. Although it did not directly partake in the trans-Atlantic slave trade, enslaved Black people were sold throughout the Spanish Empire, particularly in Caribbean territories. During the colonial period, Spanish territories were the most extensive and wealthiest in the Americas. Since Spaniards themselves were barred by the Crown from participating in the Atlantic slave trade, the right to export slaves in these territories, known as the Asiento de Negros was a major foreign policy objective of other European powers, sparking numerous European wars such as the War of Spanish Succession and the War of Jenkin's Ear. In the mid-nineteenth century when most countries in the Americas reformed to disallow chattel slavery, Cuba and Puerto Rico the last two remaining Spanish American colonies were among the last, followed only by Brazil.Enslaved people challenged their captivity in ways that ranged from introducing non-European elements into Christianity (syncretism) to mounting alternative societies outside the plantation (slave labour camp) system (Maroons). The first open Black rebellion occurred in Spanish labour camps (plantations) in 1521. Resistance, particularly to the enslavement of indigenous people, also came from Spanish religious and legal ranks. The first speech in the Americas for the universality of human rights and against the abuses of slavery was also given on Hispaniola, a mere nineteen years after the first contact. Resistance to indigenous captivity in the Spanish colonies produced the first modern debates over the legitimacy of slavery. And uniquely in the Spanish American colonies, laws like the New Laws of 1542, were enacted early in the colonial period to protect natives from bondage. To complicate matters further, Spain's haphazard grip on its extensive American dominions and its erratic economy acted to impede the broad and systematic spread of plantations operated by slave labor. Altogether, the struggle against slavery in the Spanish American colonies left a notable tradition of opposition that set the stage for conversations about human rights.

The Cortes Generales (Spanish pronunciation: [ˈkoɾtes xeneˈɾales]; English: Spanish Parliament, lit. 'General Courts') are the bicameral legislative chambers of Spain, consisting of the Congress of Deputies (the lower house), and the Senate (the upper house).

The Congress of Deputies meets in the Palacio de las Cortes. The Senate meets in the Palacio del Senado. Both are in Madrid. The Cortes are elected through universal, free, equal, direct and secret suffrage, with the exception of some senatorial seats, which are elected indirectly by the legislatures of the autonomous communities. The Cortes Generales are composed of 616 members: 350 Deputies and 265 Senators.

The members of the Cortes Generales serve four-year terms, and they are representatives of the Spanish people. In both chambers, the seats are divided by constituencies that correspond with the fifty provinces of Spain, plus Ceuta and Melilla. However, the Canary and Balearic islands form different constituencies in the Senate.

As a parliamentary system, the Cortes confirm and dismiss the Prime Minister of Spain and his or her government; specifically, the candidate for Prime Minister has to be invested by the Congress with a majority of affirmative votes. The Congress can also dismiss the Prime Minister through a vote of no confidence. The Cortes also hold the power to enact a constitutional reform.

The modern Cortes Generales were created by the Constitution of Spain, but the institution has a long history.