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what was unfortunate for SED?

wberliners could visit gdr for up to how many days a year?

often crossing pt friedrichstrasse rail station where so many emotional meets were it became known as?

in '71 communication became easier when what happened?

by '88 over how many calls a yr being exchanged?

honecker also agreed who were allowed to visit GDR w/o being prosecuted?

how many motorways from FRG to GDR?

and how many train routes?

westerners often checked at security pts w/ hwat being taken off them?

and mirrors placed under vehicle to check for?