 Complete the following phrase:  After that, he devoted himself to travel, visiting among many other places Spain 1899-1900, Egypt 1900-1901, Scandinavia 1903-1904 and the Carpathians 1906. In Spain, he and Kossak gathered material for a panorama of the Battle of Somosierra, which was never completed because of objections from the Russian authorities. In Egypt, he made sketches for a panorama of the 