Question

what happened as a result of the treaty of paris?
spain, the predominant colonial power from 1500 to 1650, was officially forced out of north america.
the british won the fight over the fertile ohio river valley and gained control of most french lands in north america.
the prussians gained control of portugal and eastern europe by 1800.
the british became the dominant colonial power in the americas by 1800.

Explanation:

The Treaty of Paris (1763) ended the French and Indian War (Seven Years' War). As a result, Britain gained control of most French lands in North America, including the Ohio River Valley. Spain was not forced out of North America; it still had territories like Florida (though later it gave Florida to Britain and got Louisiana from France). Prussia had no such gain over Portugal and Eastern Europe through this treaty. And while Britain became a major colonial power, the statement about being the dominant colonial power in the Americas by 1800 is too broad - there were still other powers (like Spain) with significant holdings.

Answer:

The British won the fight over the fertile Ohio River Valley and gained control of most French lands in North America.