The Impact of Slavery (Grade 10 NSC Matric History): Revision Notes
The Impact of Slavery
The process of colonial expansion
European powers, particularly the Portuguese, followed a systematic approach to colonial expansion that led to widespread slavery. This process began with royal support from monarchs who wanted to expand their territories and increase their wealth.
Technology played a crucial role in making expansion possible. Europeans developed advanced tools including:
- The quadrant and astrolabe for navigation
- Improved boats capable of long ocean voyages
- Cannons and muskets for military superiority
The Catholic Church provided moral justification by claiming Europeans needed to convert 'heathen' populations to Christianity. This religious excuse helped Europeans feel their actions were righteous.
The combination of royal backing, technological superiority, and religious justification created a powerful framework that enabled European powers to justify and carry out their colonial expansion plans.
Trading companies emerged as the main vehicles for expansion. These companies raised capital from stock exchanges, allowing investors to fund expensive overseas ventures. With this financial backing, Europeans conquered territories, killed resistance fighters, looted valuable resources, plundered wealth, took land, and established colonies.
The final step was forcing local people to become slaves, extracting precious metals and other resources from mines, or working in crop fields for European benefit. This represents one of history's most systematic forms of exploitation.

The Colonial Expansion Process: Step-by-Step
- Royal Support: Monarchs provided official backing and resources
- Technological Advantage: Advanced navigation tools and weapons
- Religious Justification: Church support for "converting heathens"
- Financial Backing: Trading companies raised capital from investors
- Military Conquest: Use superior technology to defeat local resistance
- Resource Extraction: Establish colonies and force local populations into slavery
The consequences of slavery
The wealth generated from trading enslaved people and their labour fundamentally transformed Western powers and created lasting economic and social changes.
Economic transformation
Cities and ports experienced massive growth as centres of the slave trade. Major cities like Amsterdam, Bristol, and Liverpool became wealthy and expanded rapidly due to profits from slavery and related trade.
These port cities became the economic powerhouses of Europe, with their wealth directly tied to the exploitation of enslaved people. The architectural grandeur and commercial success of these cities was built on human suffering.
Stock companies began investing heavily in purchasing enslaved people for plantations in colonies. This created a new form of capitalism based on human bondage.
Banks provided crucial support by lending money to new businesses involved in overseas trading. This financial system enabled the expansion of slavery-based commerce.
Social changes
A new middle class of entrepreneurs emerged from the profits of slave trading. These individuals gained wealth and social status through their involvement in the slave economy.
Science and technology advanced rapidly, driven by the need for new weapons and improved methods of production to maintain control over enslaved populations and increase productivity.
The advancement of European science and technology was directly linked to the needs of maintaining slavery and increasing the productivity of enslaved labour. This shows how innovation can be driven by oppressive systems.
Consumer culture development
A new consumer market developed among ordinary people in Europe who wanted luxury goods that slave labour produced. Items such as sugar, cotton, tobacco, and tea became increasingly popular and affordable due to slave labour, creating demand that further fueled the slave trade.
Ideas of racial superiority
European colonisers developed and promoted racist ideologies to justify their exploitation of other peoples. Europeans convinced themselves they were more educated and civilised than indigenous populations, whom they labeled as 'heathen'.
This belief in racial superiority served as psychological justification for Europeans to feel their exploitation of indigenous populations was acceptable. By portraying themselves as superior, Europeans could avoid confronting the moral problems with enslaving other human beings.
These racist ideas became deeply embedded in European society and were used to maintain systems of oppression long after the initial conquest period.
The racist ideologies developed during the colonial period had lasting effects that continued to influence European and Western attitudes toward other cultures for centuries to come.
Key Points to Remember:
- Portuguese colonial expansion followed a systematic process: royal support → technology → religious justification → trading companies → financial backing → conquest → enslavement
- Slavery transformed European economies by creating wealthy cities, new financial systems, and a middle class of entrepreneurs
- Technology and science advanced due to the demands of maintaining control over enslaved populations and increasing productivity
- Consumer culture developed around luxury goods produced by slave labour, creating ongoing demand for the slave trade
- Europeans created racist ideologies claiming superiority over indigenous peoples to justify exploitation and slavery