▁in ▁Buch ar est , ▁Roman ia ▁vol ley ball ▁became ▁popular ▁in ▁Europe ▁many ▁years ▁before . ▁The ▁majority ▁of ▁the ▁teams ▁that ▁attended ▁the ▁Congress ▁which ▁eventually ▁led ▁to ▁the ▁foundation ▁of ▁the ▁F IV B ▁in ▁ 1 9 4 7 ▁were ▁from ▁this ▁continent . ▁In ▁fact , ▁the ▁foundation ▁itself ▁is ▁supposed ▁to ▁have ▁been ▁a ▁move ▁on ▁the ▁part ▁of ▁European ▁national ▁feder ations . ▁ ▁Vol ley ball ▁was ▁invent ed ▁in ▁the ▁United ▁States , ▁but ▁became ▁for ▁the ▁first ▁time ▁an ▁extremely ▁popular ▁sport ▁in ▁eastern ▁Europe , ▁after ▁being ▁introduced ▁by ▁American ▁soldiers ▁during ▁World ▁War ▁I . ▁By ▁the ▁middle ▁of ▁the ▁century , ▁it ▁had ▁already ▁spread ▁through ▁the ▁rest ▁of ▁the ▁continent ▁as ▁well . ▁Many ▁techniques ▁and ▁tact ics ▁that ▁are ▁common place ▁in ▁modern ▁vol ley ball ▁have ▁been ▁alleg edly ▁introduced ▁by ▁European ▁teams . ▁Among st ▁others , ▁it ▁would ▁be ▁worthy ▁of ▁note ▁here : ▁blocking ▁( C zech oslov ak ia , ▁ 1 9 3 8 ); ▁pen etr ation ▁of ▁the ▁set ter , ▁which ▁eventually ▁led ▁to ▁the ▁development ▁of ▁the ▁so - called ▁ 5 - 1 ▁system ▁( U SS R , ▁ 1 9 4 9 ); ▁for ear m ▁pass ▁( C zech oslov ak ia , ▁ 1 9 5 8 ); ▁and ▁back row ▁attack ▁( Pol and , ▁ 1 9 7 4 ). ▁ ▁The ▁long ▁and ▁significant ▁tradition ▁of ▁the ▁sport ▁in