History of Latvia between 1150 - 1206
At the end of the 12th century, Latvia was more often visited by traders from Western Europe who set out on trading journeys along Latvia's longest river, the Daugava, to Russia. At the very end of the 12th century, German traders arrived and with them came preachers of the Christian faith who attempted to convert the pagan Baltic and Finno-Ugric tribes to the Christian faith. The Livs did not willingly convert to the new and different beliefs and practices, and particularly opposed the ritual of baptism. News of this reached the Pope in Rome and it was decided that Crusaders would be sent into Latvia to influence the situation.
The Germans founded Riga in 1201, and gradually it became the largest city in the Southern part of the Baltic Sea. Order of the Sword Brothers was founded in 1202 to subjugate the local people. The Livs were conquered by 1207 and the most of Latgalians by 1214.
References: Wikipedia
Previous historical period: Viking Age (800-1149) | Next historical period: State of the Teutonic Order (1207-1561)The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.