Answer:
What that's question please use only English
<span>The biggest problem faced by the early Byzantine engineers was that the growth of the city far outpaced the growth in its resources, so water and food had to be brought from the outside.The city was also under constant threat of invasion by Germanic tribes to the north and east and needed to be heavily fortified, making moving resources into the city a bit more difficult.</span>
The primary reason given by U.S. leaders to justify military involvement in Vietnam was that it would "<span>d. keep communism from spreading throughout the region," since this was part of the US policy of "containment" during the Cold War. </span>
Mostly from Europe and Asia, including, Britian, Ireland, France, Russia, China, etc etc
The last answer choice is correct. They declined at first but through the war they grew.
