thank you very much. [applause] >> american history tv. >> more than 10,000 flee cuba. florida ino key west nearly 2000 votes. why do they come? why are they so many? approximately 100,000 cuban refugees arrived in florida from the port of mariel, cuba. hear from these new arrivals and find out why they left.

bill clinton accepts his party's presidential nomination in new york city. >> i proudly accept your nomination for president of the united states. incumbent president george h.w. bush excepts his potty -- party's nomination in houston. >> i am proud to receive an honored to accept your nomination for president of the united states. 4:45, on the creation and evolution of british village. greenwich village. >> nobody ever crossed that line. they might cross the line to work as a servant.

but they never went on the other side. and at 8:00 p.m., on the presidency. >> every time i look at washington it is unanimous. everyone is unanimously appointed. what a record. >> citizens have got to feel that their voting -- vote matters and whether they can not

or whethergle cent they can write a big check that their concerns and struggles will be listened to and followed up on. >> he helped shepherd the change by whereby senators were not appointed by their legislators. so idemanded elections guess it wasn't the first get it that it wasn't going to be the party bosses who made the decision of who the nominees were. who were goingle to get a chance to vote in free and fair elections.

>> all weekend, american history las vegas,ring nevada. learn more all weekend here on american history tv. collects as a matter of fact ever since trinity, they have been eyeing the great barren stretches of the southwest. populationom the with favorable winds and with necessary consistency of soil and formation. 65 miles north and west of las

vegas and atomic range was established. miles minglede with miles of solid rock. arrange remote from civilization isolated as the names of the men who once made their fortunes here. >> we welcome you to the national atomic testing museum. the museum focuses on atomic testing over a. 1992the early 1950's to and the interesting story occurs right after world war ii in between that time of the development of the cold war and it was quite a question of what to do with nuclear weapons. tosident truman worked hard

see what the consensus was. he made it early on. truman and ensure that the department of defense was not in charge of it. they were always the one in charge of nuclear weapons. that is the big surprise to people. military cannot even get their hands on nuclear weapons. it was not overseen by the military. the test site was established in 1951. in first atomic on exploded new mexico but all the deaths were done in the -- tests were done in the pacific. it cost thousands to millions of dollars to move equipment out

there to the pacific. they needed something closer but it was rather controversial to establish a test site in the united states. the president conceded to establishing a test site within the united states. areais a very attractive it was actually the old las vegas gunnery and bombing range. it was a huge area where they actually tested though walmart crews. it laid pretty an active after world war ii and it was an ideal place as far as consideration for a very remote location to test nuclear weapons. 28 nuclear900 and tests at the test site.

the other 828 were done underground in the tunnels. 1963, the soviet union and the united states agreed to a limited test ban treaty. this did not prevent nuclear testing but it didn't limit it. you cannot test underwater and you cannot test in the atmosphere. you cannot test in space either. they developed test sites where they drove vertical or horizontal tunnels underground to do their nuclear testing. basicwere really two types and it really depended. they were horizontal tunnels and vertical tunnels. there was a lot of mountain ranges that were good for digging it. many of those tunnels were of fixed testests

or scientific test. they would actually test the effects of a nuclear blast. most of the weapons testing took place and deep vertical shafts dug straight into the ground. it was actually an extremely huge into -- enterprise to undertake. drill very deep and very wide tunnels straight down into the ground. weaponuld submerge a testbed package such as you see displayed behind me. record the yield order last effect. that is actually a test canister

that was designed to be lowered into the ground and down here they actually held a nuclear warhead. there were numerous projects that took place. it is basically a project to study the feasibility of the nuclear rocket.

he actually came to the test toward the2 and lower project here. he saw many demonstrations. the main problem with the development and design for a nuclear pocket motor was it was too big and heavy to launch into space. the nevada test site to this day still does department of energy resources. and research. they are again interested in rockething nuclear propulsion. i understand that within a year or so they will be doing some work on that as a test site.

>> we have a very large visitation here and there are a lot of people from international visitors. this is probably the most talked about subject matter of our museum is the pop cultural part of the atomic age. it had a great effect in pop culture not only in the 50's but it actually went back earlier than that. many people will tell you that wasterm atomic bomb actually very prevalent in the 1920's and 30's. it was a concept in science .iction of an atomic bomb of course they had no concept of what it was until it was developed in used.

it really came into popular american culture. it was quite the rage. you could go outside a local casino and see a mushroom cloud in the distance. it got to the point that there thatso many above ground local people and tourists could

come to las vegas and plan on witnessing a nuclear blast. it was only about the some miles from the test site. i think this artifact from the berlin wall is a perfect exit point of our museum. people who founded this museum is the actual veterans of the test site. they are very proud that they fought and won the cold war. that are many believers believe that the atomic bomb led to peace for the cold war. different tensions rose during the cold war and how close we actually came during the -- cuban missile crisis. the school kids, you can see it on their faces. nuclear aware we have

weapons and it is an issue. it is a real history lesson for them to visit this museum and look at snapshots in time and see the history of where we are going. >> our city tour staff recently traveled to las vegas, nevada. learn more about our tour on c-span.org. you are watching american history tv all weekend and every weekend. [captions copyright national cable satellite corp. 2016] [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org] our live coverage of the presidential race continues tuesday night with six states.

>> and more different vision for our country than the one between forside of democrats progress and prosperity. then the presumptive nominee on the republican side. >> we are going to win on education, no more common core bringing us down. we are going to win with health care. we have got to redefine what it means in america. be demanding a government that represents all of us not just the 1%.

>> join us live for election results, candidate speeches and your reaction. we will look ahead to the fall battleground states. clemson university professor talks about the rise of the interurban electric rail at the end of the 19th century. they were similar to numeral ural trolley. these local systems allowed people to get to city centers in a cheap, reliable way. he talks about them as precursors to the light rail of today. his classes about an hour and 10 minutes. a we are going to begin