Question: How many people starting the great migration of the Slavs live in the country being the colonial holding in the continent having Purus River and governed by Portugal?

<P0-S0> the juruá river (portuguese "rio juruá"; spanish "río yurúa") is a southern affluent river of the amazon river west of the purus river, sharing with this the bottom of the immense inland amazon depression, and having all the characteristics of the purus as regards curvature, sluggishness and general features of the low, half-flooded forest country it traverses. <SEP> <P1-S0> the recorded history of maryland dates back to when europeans began exploring the area, starting with the italian / venetian john cabot (c. 1450 -- c. 1500), exploring the coast of the continent of north america for england in 1498. the first european settlements were made in 1634, when the english arrived in significant numbers and created a permanent colony. <P1-S1> maryland was notable for having been established with religious freedom for roman catholics. <P1-S2> like other colonies of the chesapeake bay, its economy was based on tobacco as a commodity crop, cultivated primarily by african slave labor, although many young people came from britain as indentured servants in the early years. <SEP> <P2-S0> Although the royal family returned to Portugal in 1821, the interlude led to a growing desire for independence amongst Brazilians. <P2-S1> In 1822, the son of Dom João VI, then prince - regent Dom Pedro I, proclaimed the independence of Brazil on September 7, 1822, and was crowned Emperor of the new Empire of Brazil. <P2-S2> Unlike the Spanish colonies of South America, Brazil's independence was achieved without significant bloodshed. <SEP> <P3-S0> According to eastern homeland theory, prior to becoming known to the Roman world, Slavic-speaking tribes were part of the many multi-ethnic confederacies of Eurasia – such as the Sarmatian, Hun and Gothic empires. <P3-S1> The Slavs emerged from obscurity when the westward movement of Germans in the 5th and 6th centuries CE (thought to be in conjunction with the movement of peoples from Siberia and Eastern Europe: Huns, and later Avars and Bulgars) started the great migration of the Slavs, who settled the lands abandoned by Germanic tribes fleeing the Huns and their allies: westward into the country between the Oder and the Elbe-Saale line; southward into Bohemia, Moravia, much of present-day Austria, the Pannonian plain and the Balkans; and northward along the upper Dnieper river. <P3-S2> Perhaps some Slavs migrated with the movement of the Vandals to Iberia and north Africa. <SEP> <P4-S0> Its drainage basin is , and the mean discharge is 8,400 m³/s. <P4-S1> The Purus River or Rio Purús is a tributary of the Amazon River in South America. <P4-S2> The river shares its name with the Alto Purús National Park as well as the Purús Province (and its conformed Purús District), one of the four provinces of Peru in the Ucayali Region. <SEP> <P5-S0> People of German origin are found in various places around the globe. <P5-S1> United States is home to approximately 50 million German Americans or one third of the German diaspora, making it the largest centre of German-descended people outside Germany. <P5-S2> Other significant centres are Canada, Argentina, South Africa and France each accounting for at least 1 million. <P5-S3> While the exact number of German-descended people is difficult to calculate, the available data makes it safe to claim the number is exceeding 100 million people. <P5-S4> Brazil is the second largest with 5 million people claiming German ancestry.