The person in question is Woodrow Wilson:
He was the president of the United States from 1913 to 1921, which means that he was the president before, during and after the First World War.
He was very active in the peace process after the war, including proposing the formation of the League of Nations.
The primary factors for migration among southern African Americans were segregation, an increase in the spread of racist ideology, widespread lynching (nearly 3,500 African Americans were lynched between 1882 and 1968), and lack of social and economic opportunities in the South.
The crusades from Europe believed that Jerusalem (the holy land) was theirs, while the Middle Eastern countries disagreed, leading to battles and attacks in the northern part of Jerusalem.
Así es esta muy bien te lo mereces