Railroads played an absolutely crucial role in the Industrial Revolution, since they made for the incredibly fast transfer of goods such as iron and steel that were used to build things--not to mention the transport of the workers themselves.
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give more points. I would write :)
Arizona and Sonora share the same ecosystem, the Sonoran Desert region. They share common history, several Native American tribes on both sides of the border, and they have six border twin towns. The natural boundary is 361 miles long and it has never been a totally closed border. Arizona needed Sonora's miners and ranchers and they have been the biggest source of migrants to the USA.
Because of the constant flow of people across the border, the Arizona-Sonora region <em>developed its own separate identity.</em> Many people living there are bilingual and commute daily to the other side of the border for work. Their value system has been affected by the proximity of a different culture. As a result of that, intercultural and interracial mixing took place that created a generation of people who feel a connection to both countries at the same time. Prejudices have been reduced and stereotypes abolished.
<em>The interdependence</em> between the USA and Mexico has always been and still is business related. Starting with vegetables trading, the cross border shopping and manufacturing developed into big industry today. A major economy connection has developed through the maquiladora sector. Arizona based companies operate about 30% of maquiladoras in Sonora and Sonora's economy is dependent on this and the automobile industry in Arizona.
Cross-border shopping, tourism ( for pleasure and medical reasons), joined environmental projects, bilingual schools and cultural events are all parts of the interdependence between the two countries.
Prohibition is the era in American history when the sale, disruption, and manufacturing of alcohol was illegal. Since selling alcohol was illegal, anyone that wanted to get alcohol was now breaking the law. However whenever there is a good/resource people want, even if it is illegal, they will pay a significant amount of money for it.
When this is the case, people will risk almost anything to make a huge profit. This is why crime and violence increase during Prohibition. Organized crime rings, lead by people like Al Capone, start to form. Due to the high demand of alcohol by American citizens, there became a huge competition between different organized crime groups for customers. Rival gangs would end up in shootouts (like the Valentine's Day Massacre).
