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Use "decisively" in a sentence
"With the development of new trade routes around the southern tip of Africa by the Portuguese and the discovery of the New World by Columbus, the center of the Western world moved decisively from the Mediterranean to the Atlantic."
"One should strive to win decisively and obviously."
"Not only did he win decisively, he also had the Independent party, the Green party, the Libertarian party and other parties to compete with."