In this task, you are given a sentence in English and your task is to translate it into Spanish. In translation, keep the numbers and capitalization (capitalize only the first word of each sentence and name).

The relative weight of the most wealthy regions of the European Union was strengthened between 1986 et 1996, testifying to a concentration of wealth, jobs and activity in certain areas: Hamburg, Brussels, Antwerp, Luxembourg, the Paris region, Darmstadt, Oberbayern, Bremen, Vienna, Karlsruhe and Emilia-Romagna.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Las regiones más ricas de la Unión Europea han visto reforzado su peso entre 1986 y 1996, lo que demuestra una concentración de riquezas, de empleo y de actividades en determinadas zonas: Hamburgo, Bruselas, Amberes, Luxemburgo, Ile-de-France, Darmstadt, la Alta Baviera, Bremen, Viena, Karlsruhe y Emilia-Romaña.