The question considered hereâhow does population growth affect the direction. and magnitude of economic change today as world population approaches 6 billionâis. germane to a key argument invoked to defend international population assistance. programs since their inception in the early 1960s.
Late June-July 1971: Nixon Authorizes âPlumbers,â Orders Media Leaks to Smear Ellsberg. President Nixon authorizes the creation of a âspecial investigations unit,â later nicknamed the âPlumbers,â to root out and seal media leaks.
John Stevens. The American engineer and inventor John Stevens (1749-1838) was one of the country's earliest experimenters with steamboats. He spent his entire career promoting better transportation in the form of steam railroads, canals, and steamboat lines.