The seleucid empire - one of the successor states of alexander ' s empire collapses under pressure from the romans 塞琉西王国-亚历山大王国的继承国在罗马人的压力下崩溃了。
2.
These trends were compounded by worsening economic conditions in the soviet union and its successor states ， where a growing shortage of foreign exchange led to a compression of import from eastern europe and an acceleration of certain commodity exports to earn hard currencies 苏联和它的后继国经济情形的恶化加剧了这一趋势，外汇短缺的增长导致了从东欧进口的压缩，加速了某些产品的出口，获得了硬通货。
