How did the first africans arrived to the americas

What two things did former british prime minister winston churchill affirm in his iron curtain speech?

What was the codename of the international coalition formed to seek removal of iraqi troops from kuwait?

Which source would best a historian understand the effect of the great chicago fire on families? a. a biography of a chicago family displaced by the fire b. a letter from a grandmother in new york to her family in chicago c. a newspaper editorial about families who were displaced d. an oral history dictated by an adolescent who fled the fire