Berlin remained the last open up crossing during the significantly militarised and airtight "internal-German" border. On 13 August 1961, the East German (GDR) Management closed the border just months immediately after East German leader Walter Ulbricht stated in a push convention "Niemand hat die Absicht eine Mauer zu errichten" (nobody https://roofingservicesinoswego86420.homewikia.com/10928417/5_tips_about_tasting_you_can_use_today