An example of a primary source is George Washington’s diary. Another primary source would be a letter written home by a soldier in the Revolutionary War. Another example of a primary source is Einstein’s lab notes.
Answer:
The Seven Years' War was a conflict between France and Great Britain that took place between 1756 and 1763, and faced both European powers and their allies in various territories, including North America.
In North America, both nations had colonies of considerable importance: France had the colony of New France in what is now Quebec, Canada; while Great Britain had its Thirteen Colonies on the coast of the Atlantic Ocean. The two nations were vying for control of the Great Lakes. Thus, when the war broke out, the colonies of both countries faced each other over the disputed territories, ending with the British victory and the cession by France of all the territories of it on the continent.
Even so, the population of Quebec continued to maintain its customs (its Latin culture, its Catholic religion against British Anglicanism and, fundamentally, its French language). This situation was maintained over the years, and today it is possible to observe in Canada a bilingualism at the national level, with the French language being predominant in the province of Quebec, and the English language in the rest of the country.
Romans came from the Italian pensinsula and came to Britain in the early first century. It was a gradual process and they slowly started conquering the different parts of the British isles during that time.
Vikings came from the Northern parts of Europe and they started conquering the British isles in later periods.
Both came and wanted to conquer the lands, while Romans were 'established' conquerors and started governing these areas soon by spreading their culture etc. The Vikings on the other hand had pillaing more in mind and did more of that and did not govern that much from the beginning.
Harry Truman, John F. Kennedy, and Lyndon Johnson