In the 19th Century, the Transcontinental Railroad was built to connect the East and West of the United States. The railroad was important to make the country more cohesive- it would be the first efficient form of transportation across the US. However, the project had many obstacles and would be an engineering feat to complete.
There are two important qualities of soil that impact the flavor of tea and contribute to what is known as that tea’s terroir: acidity and nutrients.
Just like being a dog or a cat person, we like to identify as being part of an implicit coffee or tea person's club. The requirement of being part of the coffee club is that you are a highly productive caffeine-lover, while the tea club requires that you be a very healthy and relaxed hippie. I claim these stereotypes to be, not so surprisingly, far from true.
The amount of sun and shade a tea plant receives influence the flavor in your cup. Tea plants require some sunshine to grow but too much and the quality of the tea will plummet.
You may have heard that black tea has more caffeine than green tea. You may have heard the exact opposite- that actually, green tea has more caffeine than black tea. In reality, you can't say that all green teas have more caffeine than black teas (or the reverse). The question of how much caffeine is in your tea is a combination of the type of tea, how it was processed, and how it's prepared.