The Answer is B. Trade between Europe and byzantine empire.
<span>The domino theory, which governed much of U.S. foreign policy beginning in the early 1950s, held that a communist victory in one nation would quickly lead to a chain reaction of communist takeovers in neighboring states. In Southeast Asia, the United States government used the domino theory to justify its support of a non-communist regime in South Vietnam against the communist government of North Vietnam, and ultimately its increasing involvement in the long-running Vietnam War (1954-75). In fact, the American failure to prevent a communist victory in Vietnam had much less of a global impact than had been assumed by the domino theory. Though communist regimes did arise in Laos and Cambodia after 1975, communism failed to spread throughout the rest of Southeast Asia.
I hope this was of help.
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b.) powers that allow the each branch to curb the others
Are there options to choose from?
Out of that list, the one that describes the events at Appomattox Courthouse in April of 1865 is A. Lee surrendered to Grant, who gave him generous terms of surrender. Robert E Lee was the commander of Confederate forces in Virginia and thus, as the loser, he was the one who had to surrender to Grant, the commander of Union forces. However, the terms were very generous as President Lincoln sought an immediate period of reconciliation rather than harboring ill-will in a military state. As such, the Confederate troops present at Appomattox were allowed to leave without repercussion.<span />
