<span>C. The trade of slaves weakened the rulers.
Portugal </span><span>was able to conquer the kingdom of Congo as the monarchy had an agreement to concede part of the population as slaves, which in years weakened the primary power present at the time, allowing the Europe nation to take advantage of this fact and conquer the country for itself, thanks to the weak primary power present.</span>
<span>Hello Laviihagreat,
Some inventions or ideas that helped to advance trade are, F</span>lat bottomed boats, Carts driven by animals, and <span>Seagoing vessels. These inventions or ideas helped advance trade.
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Answer:
Thomas Jefferson used the thoughts first penned by John Locke while writing the Declaration of Independence. The phrase "life, liberty, and pursuit of happiness," was an idea first considered by Locke in his Two Treatises on Government.
Their efforts in the war were recognized and helped them win suffrage.