Spain colonized Cuba, and Portugal colonized Brazil.
The successful launch of Sputnik 1 was the first instance of a successful launch of an artificial Earth satellite launched into outer space. This was done successfully by the Soviet Union on October 4, 1957. This launch spawned the Space Race between the United States and the Soviet Union to gain dominance over outer space technology to prevent either country from possessing a military advantage.
They settled around the tigris river
Answer: Secondary historical sources.
Explanation:
Two types of sources, primary and secondary, have generally been represented in history. The primary sources are artefacts, documents, records, and other raw, source material, and they serve primarily as a source of information for the historian.
Secondary sources include quotes, comments and the like. For many historians, secondary sources create problems, they may be useful, but they need to be correctly interpreted. Because of their form, they are subject to change (because the quotation can be distorted over time and get another meaning), so they should be carefully handled. Therefore, they are distrustful of context and unreliable for proof.
