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Events in Tallinn
On September 16th, 1310 the deputy of King Erik VII of Denmark, Johannes Canne gave Tallinn Town Council an order to reinforce the city walls. The construction of the walls lasted until mid-14th century. 1310
 
 
1312 In 1312 the papal representative sent to Riga to solve the quarrels between Livonian rulers placed the Livonian Order under excommunication.
In 1322 the first mention of Tallinn Town Hall. 1322
 
In February 1323 the Pskovian and Lithuanian troops crossed the Narva River and reached Tallinn. 1323
 
 
1330 In 1330 the city of Riga surrendered to the forces of the Livonian Order and needed to build a new Order Castle.
In 1343-1345 St George’s Night (Jüriöö) uprising – the Estonians’ attempt to free from the foreign rulers. The rebels besieged Reval in 1343, however, could not conquer it. 1343
 
In 1345 a 4-kilometre water canal was established from Lake Ülemiste to the Harju Gate in Tallinn. 1345
 
On August 29th, 1346 Valdemar IV Atterdag of Denmark sold the Duchy of Estonia and Tallinn to the Teutonic Order for 19000 silver marks. 1346
 
In 1347 the Grand Master of the Teutonic Order Heinrich Dusemer sold the Duchy of Estonia with the towns to the Livonian Order for 20 000 silver marks. 1347
 
1350 – 1360 reconstruction of Toompea Castle . 1350
 
 
1356 In 1356 the first Hanseatic Days take place in Lübeck.
 
1361 In 1361, King Valdemar IV of Denmark conquered the town of Visby.
In 1365 a brickyard was established in Kopli to manufacture bricks and roof tiles. 1365
 
 
1370 In May 1370, the Treaty of Stralsund was signed forcing King Valdemar IV to give up the town of Visby and acknowledge the supremacy of the Hanseatic League in the Baltic Sea.
In 1371 Toompea Castle is added the tower Tall Hermann (Pikk Hermann). 1371
 
From 1375 an active struggle against pirates, the Victual Brothers, began lasting for about 50 years. In 1397 Reval lost altogether 4 ships in the clashes. 1375
 
In 1380s the waterworks of wooden pipes and public wells were constructed in Reval. 1380
 
 
1392 In 1392, the Peace Treaty of Niebuhr was signed between the city of Novgorod and the cities of Lübeck, Riga, Visby, Tartu and Tallinn ending the ongoing feuds and ensuring free trade for both parties.
 
1398 In 1398, the town of Visby was destroyed in the battle of Gotland between the Victual Brothers and the Teutonic Order. The Victual Brothers were forced to leave.