Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.
A、surgeFormulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
EllaGrasso,electedgovernorofConnecticutin1974,supportedtheenactment(given,granted)ofafreedom-of-informationlaw.
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野