Portuguese Colonists on the Coast of Brazil Began to Explore

question 19

Multiple Choice

Portuguese colonists on the coast of Brazil began to explore the interior of the continent primarily because

• A) of the discovery of gold and diamonds.
• B) they wished to expand their sugar plantations inland.
• C) they needed more land for those coming from Portugal.
• D) of a desire for exploration of the unknown.

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Definitions:

Internal Validity

The extent to which a study or experiment can establish a cause-and-effect relationship within its scope, free from external influences.

Observational Studies

Research methods where subjects are observed in their natural environment without any manipulation by the researcher, used to collect data on behaviors, outcomes, or phenomena.

Laboratory Experiments

Controlled tests conducted in a structured and isolated environment to investigate hypotheses by manipulating variables.

External Variables

Factors outside the individual that can influence their behavior or the outcome of a situation, including environmental, social, or economic conditions.