Barbed wire, effectively enclosing large tracts of land in the west, caused restricted the building of the transcontinental railroad did not have an impact on american indians greater conflicts over land claims between ranchers and american indians and limited their ability to roam land freely cowboys to riot against ranchers because barbed wire led to high unemployment rates

"the gulf of tonkin resolution in 1967".

the gulf of tonkin resolution (officially called southeast asia resolution, public law 88-408) is a law issued by the congress of the united states of america on august 7, 1964, in which president lyndon b. johnson was authorized1 to act in a comprehensive manner against the democratic republic of vietnam, which he accused of aggressions against us ships in the gulf of tonkin, where the resolution takes its name. the gulf of tonkin resolution is of historical importance because it gave authorization to the us president. lyndon b. johnson, without a formal declaration of war by congress, to use military force in southeast asia.