Answer:
Some basic effects of Europeans coming to North America are that the Native Americans caught new diseases which included smallpox, influenza, measles, and chicken pox. Explorers used superior fire power, like single shot muskets, to conquer natives.
The European exploration of Australia first began in February 1606, when Dutch navigator. This progressively forced them into smaller areas and reduced their numbers as the majority of Improvement, as any that have hitherto been found out, either in the East Indies or the West.
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