D. the exile of Napolean to St. Helena
WWI was caused by many things, among them was the assassination of Franz Ferdinand leading to the Austria-Hungary empire declaring war on Serbia which dragged most of Europe into the war due to alliances. The U.S. entered the war due to Germanys war tactics and the Zimmermann note.
One <span>important factor that contributed to the Atlantic slave trade during the time of European colonialism was the high demand for labor in places like the Caribbean, where sugar was being harvested due to its high demand in Europe. </span>
The answer is the Gulf of Tonkin Resolution. i hope this helped <3