The most important was The Battle of the Somme (1 July - 18 November 1916) was a joint operation between British and French forces intended to achieve a decisive victory over the Germans on the Western Front. For many in Britain, the resulting battle remains the most painful and infamous episode of the First World War The AEF helped the French Army on the Western Front during the Aisne Offensive (at the Battle of Château-Thierry and Battle of Belleau Wood) in the summer of 1918, and fought its major actions in the Battle of Saint-Mihiel and the Meuse-Argonne Offensive in the latter part of 1918.
The Enlightenment, or the Age of Enlightenment, is also known as the Age of Reason.
This was an era where more and more people became aware of themselves, and not of church as their only leader and idol in life. They started thinking for themselves, and philosophy started blooming, which is why this era is also known by its other name.
The exact time a captured African spent from capture until disembark in the West Atlantic changed according I) to where he/she was captured and final destination and II) to when it happened. The travel from West Africa to Brazil in the XIXth century, for example, when transportation had become more efficient, took around 30 to 45 days.
At the beginning of the systematic Atlantic slave trade, in the early 1500s, the travel from West Africa to Central America lasted two to three months. In the mid-nineteenth century the travel to Bahia (Brazil) lasted 3 weeks and to Cuba lasted 5 weeks.