▁rare ▁type ▁of ▁blood ▁cancer , ▁manifest ing ▁as ▁a ▁type ▁of ▁chron ic ▁le uk emia . ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Category : My el oid ▁ne op las ia ▁Category : R are ▁can cers <0x0A> </s> ▁Alfred ▁Charles ▁William ▁Har ms worth , ▁ 1 st ▁Vis count ▁North cl iffe ▁( 1 5 ▁July ▁ 1 8 6 5 ▁– ▁ 1 4 ▁August ▁ 1 9 2 2 ) ▁was ▁a ▁British ▁newspaper ▁and ▁publishing ▁magn ate . ▁As ▁owner ▁of ▁the ▁Daily ▁Mail ▁and ▁the ▁Daily ▁Mir ror , ▁he ▁was ▁an ▁early ▁developer ▁of ▁popular ▁journal ism , ▁and ▁he ▁exerc ised ▁vast ▁influence ▁over ▁British ▁popular ▁opinion ▁during ▁the ▁Edward ian ▁era . ▁Lord ▁Be aver bro ok ▁said ▁he ▁was ▁" the ▁greatest ▁figure ▁who ▁ever ▁stro de ▁down ▁Fle et ▁Street ." ▁About ▁the ▁beginning ▁of ▁the ▁ 2 0 th ▁century ▁there ▁were ▁increasing ▁attempts ▁to ▁develop ▁popular ▁journal ism ▁intended ▁for ▁the ▁working ▁class ▁and ▁t ending ▁to ▁emphas ize ▁sens ational ▁topics . ▁Har ms worth ▁was ▁the ▁main ▁innov ator . ▁▁ ▁North cl iffe ▁had ▁a ▁powerful ▁role ▁during ▁the ▁First ▁World ▁War , ▁especially ▁by ▁critic izing ▁the ▁government ▁regarding ▁the ▁Sh ell ▁Cris is ▁of ▁ 1 9 1 5 . ▁He ▁directed ▁a ▁mission ▁to ▁the ▁new ▁al ly , ▁the ▁United ▁States , ▁during ▁ 1 9 1 7 , ▁and ▁was ▁director ▁of ▁enemy ▁propag anda ▁during ▁ 1 9 1