first astronomer first asylum first at the university first athlete first atomic bomb first atoms first attach first attacks first attack first attempt failed first attempt to create first attempts first attempt first attended first attention first attorney first attracted first attraction first attribute first auction first audience first audio first audition first audit first australians first australian first austrian first authentication first author of the study first authority first authorization first author first autobiography first autograph first automated first automatic first automobile first autopsy first auto first autumn first available flight first available opportunity first available first avatar first avenger first avenue first ave first awakening first award first axis first baby born first baby first bachelor first backup first bag first balkan war first ballet first balloon first ballot first ball first band first bang first banknotes first bank first banner first ban first baptism first baptist church first barbecue first barrel first barrier first bar first baseman first base to first base first basic first basket first bass first batch first bathing first bathroom first bath first battalion first battery first battle of bull run first battle first be examined first beach first beam first beast first beat first beauty first became first bedroom has first bedroom first bed first beer first began first beginnings first belgian first believed first bell first belt first benchmark first bend first benefit first beta version first beta first betting round first bet first bible first bicycle first bid first big break first big brother first big case first big event first big hit first big job first big mistake first big one first big project first big step first big success first big first bike first billion first bill first biographer first biography first bird first birthday of the baby first birthday party first birthday first birth first bishop of rome first bishop first bitcoin first bite first bit first black man first black player first black president first black woman first black first blade first blast first blessing first blockchain first block first blog post first blog first blood first bloom first blow first blue first blush first board first boat first body first boeing first boil first bombardment first bombing first bomb first bond first boner first bone first bonus first book in the series first book of poetry first book printed first book was published first booking first books first book first boot first border first born son first born first boss first boston first bottle first bounce first bouquet first boutique first bout first bowl first bow first box first boyfriend first boy first bracelet first brain first branch first brand first brazilian first bra first breach first break-in