Sim daws qhov teeb meem ntawm cov dev xav tau kev tiv thaiv los ntawm huab cua phem hem tau yog ib qho tseem ceeb rau cov thawj coj tub rog thoob plaws hauv lub xyoo pua 20th thiab mus rau lub xyoo pua 21st tam sim no. Qhov kev txhawj xeeb tseem ceeb rau cov thawj coj tub rog tau siv tshuaj lom neeg cov tshuaj lom neeg hauv kev sib ntaus sib tua uas cuam tshuam rau tib neeg cov tub rog thiab cov tsiaj ua haujlwm.
Kev siv lub qhov ncauj qhov ntswg rau cov dev tub rog hnub rov qab mus rau Ntiaj Teb Tsov Rog I. Kev siv tshuaj lom neeg ua tsov rog tau tshwm sim nyob rau hauv trenches thiab cov tub rog tsis yog tib qho cuam tshuam. Cov dev tub rog tau siv rau ntau lub hom phiaj, suav nrog lub luag haujlwm xa mus, kev pabcuam tub txib, thiab kev tshawb nrhiav, thiab muaj kev cuam tshuam rau tib neeg cov tshuaj raws li lawv cov neeg tuav haujlwm.
Txhawm rau tiv thaiv lawv, lub npog ntsej muag roj tau tsim tshwj xeeb rau cov dev, thiab tau qhia txog kev ua tsov rog. Cov npog ntsej muag no npog tus dev lub qhov ntswg thiab qhov ncauj, muab kev tiv thaiv cov pa phem. Kev siv lub qhov ncauj qhov ntswg rau cov dev tub rog tseem niaj hnub no, vim lawv tseem yog ib feem tseem ceeb ntawm kev ua tub rog hauv ntau qhov kev tsis sib haum xeeb thoob ntiaj teb.
Txhawm rau daws qhov teeb meem ntawm kev sib ntaus sib tua tshuaj lom neeg ntawm kev sib ntaus sib tua rau cov tub rog yeej ib txwm muaj kev hloov kho tshiab rau cov dev ua tub rog. Peb tuaj yeem saib xyuas cov kev xav tau ntawm cov dev no li cas hauv kev kub ntxhov tshuaj lom neeg ua rog?
Ntawm no yog ib phau ntawm keeb kwm dluab ntawm cov tub rog ua haujlwm dev hnav ntau lub ntsej muag roj tiv thaiv lawv ntawm cov kev hem thawj no. Roj los yog tshuaj lub qhov ncauj qhov ntswg rau dev tseem yog thaj chaw ntawm kev tsim kho tshiab rau cov thawj coj tub rog thoob ntiaj teb.
