Learn on PengiIMPACT California Social Studies, Grade 8Chapter 1: Changing Ideas and a Changing World

Lesson 2: Early Exploration

In this Grade 8 lesson from IMPACT California Social Studies, students examine how Portugal built a trading empire by pioneering Atlantic exploration and searching for a sea route to Asia around Africa. Students analyze the roles of Prince Henry the Navigator, Bartolomeu Dias, and Vasco da Gama, as well as the caravel's importance to Portuguese navigation. The lesson also introduces the early Spanish-sponsored explorers and the economic motivations — including the gold and ivory trade — that drove European expansion into Africa, Asia, and the Americas.

Section 1

Portugal Leads the Way: Prince Henry and the Route to India

Key Idea

Portugal was the first European nation to launch major sea expeditions, starting the Age of Exploration. This was thanks to Prince Henry the Navigator, who was determined to find a sea route to Asia by sailing around Africa. He sponsored voyages and created a school for sailors, mapmakers, and shipbuilders to improve their technology and skills.

Because of Henry’s leadership, Portuguese explorers sailed farther than ever before. Eventually, Vasco da Gama successfully rounded Africa and reached India. This historic voyage gave Portugal a direct route to the spice trade of Asia, helping it build a powerful trading empire.

Section 2

1492: Columbus's Voyage and the 'New World'

Key Idea

European nations wanted a faster sea route to Asia for trade. An Italian sailor, Christopher Columbus, proposed a bold plan: sail west across the Atlantic. After securing funding from Spain, he set sail in August 1492.

On October 12, 1492, his crew landed in the Bahamas. Columbus mistakenly believed he had reached the East Indies. Because of this error, he called the native people he met Indians, a name that would be used for centuries.

Section 3

Rivals Divide and Explore the New World

Key Idea

Spain's discovery of new lands created a rivalry with Portugal. To prevent conflict, the two nations signed the Treaty of Tordesillas. This agreement drew an imaginary line on the map, dividing the non-European world between them. Spain claimed most of the Americas, while Portugal received lands to the east, including what would become Brazil.

Following this division, other explorers revealed the true nature of the "New World." Amerigo Vespucci argued that the lands were a new continent, not Asia. Then, an expedition led by Ferdinand Magellan became the first to circumnavigate the globe, proving the vastness of the Earth and the Americas. These voyages created a more accurate map of the world.

Section 4

The Spanish Conquest of the Americas

Key Idea

After failing to find a new trade route to Asia, Spain sought wealth in the Americas. The Spanish crown sent soldiers to claim land and conquer any group that stood in their way. Led by figures like Hernán Cortés, they used superior weapons and the spread of disease to defeat the powerful Aztec and Inca empires.

Following the soldiers came Catholic missionaries, who worked to convert Native Americans to Christianity. This combination of military conquest and religious conversion established a vast Spanish empire, extracted resources, and permanently transformed the lives and cultures of the people native to the Americas.

Lesson overview

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Section 1

Portugal Leads the Way: Prince Henry and the Route to India

Key Idea

Portugal was the first European nation to launch major sea expeditions, starting the Age of Exploration. This was thanks to Prince Henry the Navigator, who was determined to find a sea route to Asia by sailing around Africa. He sponsored voyages and created a school for sailors, mapmakers, and shipbuilders to improve their technology and skills.

Because of Henry’s leadership, Portuguese explorers sailed farther than ever before. Eventually, Vasco da Gama successfully rounded Africa and reached India. This historic voyage gave Portugal a direct route to the spice trade of Asia, helping it build a powerful trading empire.

Section 2

1492: Columbus's Voyage and the 'New World'

Key Idea

European nations wanted a faster sea route to Asia for trade. An Italian sailor, Christopher Columbus, proposed a bold plan: sail west across the Atlantic. After securing funding from Spain, he set sail in August 1492.

On October 12, 1492, his crew landed in the Bahamas. Columbus mistakenly believed he had reached the East Indies. Because of this error, he called the native people he met Indians, a name that would be used for centuries.

Section 3

Rivals Divide and Explore the New World

Key Idea

Spain's discovery of new lands created a rivalry with Portugal. To prevent conflict, the two nations signed the Treaty of Tordesillas. This agreement drew an imaginary line on the map, dividing the non-European world between them. Spain claimed most of the Americas, while Portugal received lands to the east, including what would become Brazil.

Following this division, other explorers revealed the true nature of the "New World." Amerigo Vespucci argued that the lands were a new continent, not Asia. Then, an expedition led by Ferdinand Magellan became the first to circumnavigate the globe, proving the vastness of the Earth and the Americas. These voyages created a more accurate map of the world.

Section 4

The Spanish Conquest of the Americas

Key Idea

After failing to find a new trade route to Asia, Spain sought wealth in the Americas. The Spanish crown sent soldiers to claim land and conquer any group that stood in their way. Led by figures like Hernán Cortés, they used superior weapons and the spread of disease to defeat the powerful Aztec and Inca empires.

Following the soldiers came Catholic missionaries, who worked to convert Native Americans to Christianity. This combination of military conquest and religious conversion established a vast Spanish empire, extracted resources, and permanently transformed the lives and cultures of the people native to the Americas.