1)
What is the meaning of "u'Lehapil Zar'am ba'Goyim [u'Lezarosam ba'Aratzos]"?
1.
Rashi (from Tanchuma Shlach 12): At that time, Churban ha'Bayis was decreed. They cried on the night of Tish'ah b'Av. Hashem said, you cried without reason - I will fix for you crying for generations! Radak - He decreed that their seed will be exiled from their land and scattered in lands - "Ki Solid Banim u'Vnei Vanim