Tumulty, [34]
U-Boat campaign, opening of, [9]; prosecution of, [10] ff.; negotiations concerning, [27]; "armed merchantmen" and, [222], [224] ff., [230], [237] ff., [258], [260], [354]; surrender of, [263], [277]; American coast, [267] ff.; proposed reopening of, [282] ff., [288], [292] ff., [296], [298] ff., [303] ff., [310] ff., [314] ff., [325] ff.; [330], [346] ff., [358]; German desire for, [330] ff., [408]; reopening of, [331] ff., [353], [358] ff., [369], [372] ff., [375], [378] ff., [380], [382] ff., [387] ff., [405]
U-53, visit of, [267] ff., [296], [337]; piracy of, [342]
Ultimatum of April 18, 1916, [379]
United States, German relations with, [1], [6] ff., [9] ff., [14], [16], [18] ff., [29] ff., [60], [71], [91], [128] ff., [150], [234] ff., [250], [258], [266], [309], [311], [331] ff.; pre-war conditions in, [13], [29]; pan-American policy of, [14] ff.; Japanese relations with, [14]; Philippine affair and, [16]; characteristics of, [18]; English relations with, [18] ff., [21], [29], [81], [128], [130]; Lusitania affair and, [30] ff., [50], [141] ff., [150] ff., [162], [166], [175], [248], [259], [280], [341], [386]; public opinion in, [31] ff., [58]; German wireless stations in, [65] ff.; neutrality of, [58] ff., [65] ff.; munition traffic, [71] ff., [75] ff.; German notes to, [73] ff., [134] ff., [149], [158], [231] ff., [245] ff., [251] ff., [257]; German propaganda in, [42] ff., [89], [259] ff.; propaganda work of, [43] ff.; German ships coaled in, [73] ff.; German finances in, [80]; port control in, [83] ff.; German economic activities in, [80] ff.; German dyestuffs exported to, [99]; German conspiracies in: coaling, [101] ff.; forged passports, [103] ff.; bomb outrages, [105] ff., [112] ff.; submarine warfare against, [131] ff., [222], [224] ff., [230], [237] ff., [258], [260], [282] ff., [288], [292] ff., [296], [298] ff., [303] ff., [310] ff., [314] ff., [325] ff., [330], [340] ff., [358], [369], [372] ff., [375], [378] ff., [380], [382] ff., [387] ff., [405]; Arabic affair and, [173] ff.; Arabic negotiations with, [176] ff.; English intrigue in, [195] ff.; Ancona affair in, [210]; Sussex; affair in, [236]; desire for peace in, [344]; rupture of German diplomatic relations with, [380] ff.; army of, [413]
University of Berlin, [28]
Vaneboro, [111]
Vaterland, [35]
Venezuela, American relations with, [13]; English and German ultimatum to, [16]