Simple...
Following Jesus's execution by the Romans, some of his earliest followers, or apostles, spread his central message by writing about his life and teachings in the New Testament.
Thus, your answer, B.
B. northern and southern China
Answer:
The Soviet Union was a Communist country while the USA was a Capitalist country, in efforts to stop the communism from spreading, the United States President Truman offered help to any country that was under military threat, with hopes that this would prevent Communism from spreading.
When Alexius I Komnenoi implored the pope (Urban II) for help, he meant it to reconquer the lost Byzantine lands (and therefore return in to their de facto ruler, a.k.a., the Byzantines). Urban however, decided to merely use that as a façade in order to then invade the Muslims, and retake the holy land.
He also saw the wanted to unite Christianity as a whole (All the sects at the time, Orthodoxy, Catholicism, Paulicianism, Iconoclasts, etc. into a single conglomerate, fighting a common enemy.)
1941 and 1945, across German-occupied Europe, Nazi Germany and its collaborators systematically murdered some six million Jews, around two-thirds of Europe's Jewish population.[a][c] The murders were carried out in pogroms and mass shootings; by a policy of extermination through work in concentration camps; and in gas chambers and gas vans in German extermination camps, chiefly Auschwitz, Bełżec, Chełmno, Majdanek, Sobibór, and Treblinka in occupied Poland