at makes it extreme a difficult for them to prevail and to prevent the americans from -- from securing their independence. so we will have other dimensions of this to talk about, but i'm really grateful for your contributions today. great job everyone. [captions copyright national cable satellite corp. 2015] [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org] >> you are watching "american history tv," all weekend, every weekend, on c-span3. to join the conversation, like us on facebook. >> conservative pollster and author, kristin -- on the millennial generation and how the political parties are vying for this increasingly crucial voting bloc. >> when you take a look at where people's eyeballs are going today, it used to be folks were focused on the television. so political advertising became very heavily focused on ads. but technology has changed so

that now, if you walk into a room, what are they looking at? they are looking at their phones. so for folks in the political world who want to reach the next generation or region to the future understand what the future of political advertising is going to look like, things like the latest game, i think candy crush may be fitting in popularity, but there is always something new that is popping up. finding ways to get her message in front of people where they are paying attention because it is really important. >> tonight at 8:00 eastern and pacific on c-span's "q&a." this year, c-span is touring cities across the country exploring america's history. next, a look at our recent visit to omaha, nebraska. you are watching "american history tv," all weekend, every weekend, on c-span3. carrie meyer: the union station operated until 1971.

the last train left on may 2 and then it sat vacant for two years. and the union pacific gifted it to the city to become a museum. we made union station our home and now it is the durham museum. this exhibit focuses on the omaha livestock industry here in omaha. a very important industry for south omaha as a city, and then eventually for omaha as a whole. >> ♪ >> cattle marketing centers are strategically located, and omaha serves a large western area. it's holding pens have handled more than 100 million cattle since its founding. and here is our livestock train right on schedule. early morning arrival. carrie meyer: the livestock industry starts in the 1870's as a station, basically. a place for cattle to sort of get fed, have a feeding station before they had to a stockyard

-- head to a stock are to be slaughtered. eventually, this turns into the stockyards as we know it. 1883 is the start of what we call union stockyards. and, so, that is the beginning of this industry here. we have eight omaha city leaders who purchased just shy of 2000 acres of land, and devote 250 of those acres to livestock pens and the livestock exchange building, things like that. so they are developing this industry, starting it off in 1884. omaha had the railroad here with the union pacific and the union station. so we definitely wanted to have -- just use what we had to have the stockyards start here and utilize that transcontinental railroad going through to quickly move cattle and animals to slaughter houses, like chicago, for example.

but eventually having our own here profitable for the city. by 1890, we have 1500 people in omaha. but by the turn-of-the-century 26,000 people. and when the city of south omaha was 29 years old, it had 30,000 people. this is only four miles south of omaha. so these cities are starting to go together. in 1950, omaha annexed the city of south omaha, and the stockyard industries, so it was all one city at that point. it was called the magic city. it was also called little chicago as it grew. so it was definitely a booming industry here. by the 1950's, the stockyards employed 300 to 400 people and would run crews 20 47 to keep up with demand. by 1955, we were the largest stockyard in the world. we had surpassed chicago. we had 19 packing houses in all

types of industry associated with the stockyards that literally seemed to bloom overnight. that is the magic city. we had a lot of immigrant groups coming in to work the stockyards. germans, irish, everybody was coming to work. it was a good living. and it had everything you needed. the packing houses, the big four as we call them, major there were amenities in south omaha. if you lived in south omaha, you worked for the packing houses or the stockyards. we had about 20,000 animals a day at its height, would be shipped in. each different type of animal, hawks, cattle, sheep -- hogs cattle sheep, ours were some of the only packing houses in the 1950's that would package all three types of meat. they had been built in the 1890's and they were becoming out of date by the 1950's. really just the whole industry starts taking a different turn.

and omaha south being that center. the stockyards are unfortunately not there. the only piece that is still present is the livestock exchange building. and that was pretty much a mini city when it was conceived. it had everything in it from barbershops to cigar shops to hotel rooms. things like that for administrative offices ballrooms, it was kind of a one-stop shop for south omaha. and pretty much anything you needed to do with the stock exchange would have been there. it is now a retail and partner space. and problems still happen in the ballrooms for local high schools. but that is put in much the only thing that is left in south omaha of this booming industry. the beef industry and omaha is still -- still going strong. we have companies that still ship mate to and from and around the world -- meat to and from

and around the world. you still want to get in omaha steak when you visit. thinks like that is still very prevalent in the city. -- things like that are still very prevalent in the city. >> ♪ >> find out with the city two is going next online at c-span.org/citiestour. you are watching "american history tv," all weekend, every weekend, on c-span3. >> between 1942 and i can 46 the manhattan project was a classified research program that produced the world's first nuclear weapon. those involved included rosemary lane, who worked as head nurse and isabella carl -- karle, who was a chemist and studied in the specialized -- and specialized in the study of plutonium. this is 40 minutes. denise kiera