The USA abandoned isolationism in 1917 primarily due to the events of World War I. The sinking of the Lusitania by a German submarine in 1915 and the interception of the Zimmermann Telegram in 1917, which revealed Germany's plan to ally with Mexico against the US, led to a shift in public opinion and a desire to intervene in the war. Additionally, President Woodrow Wilson's belief in spreading democracy and promoting peace through the League of Nations also played a significant role in the decision to abandon isolationism. These factors ultimately led to the US declaring war on Germany and entering World War I. **

The USA abandoned isolationism primarily due to the changing global circumstances and the need to address threats to its security and economic interests. As the text mentions, the rise of aggressive powers such as Nazi Germany and Imperial Japan, as well as the increasing interconnectedness of the world, made it increasingly difficult for the USA to remain isolated. Additionally, the attack on Pearl Harbor forced the USA to enter World War II and take a more active role in global affairs. These factors ultimately led to the abandonment of isolationism in favor of a more interventionist foreign policy. **

No, circumcision is not a fashion trend. Circumcision is a cultural, religious, or medical practice that has been performed for thousands of years in various societies around the world. It is not a passing trend, but rather a deeply rooted tradition with significant historical and cultural significance for many communities. While there may be fluctuations in circumcision rates over time, it is not accurate to categorize it as a fashion trend. **

Yes, piercings are considered a fashion trend. Over the years, piercings have become a popular way for people to express their individuality and personal style. From ear piercings to nose, lip, and body piercings, they have become a common form of self-expression and a way to enhance one's appearance. Many people view piercings as a fashion statement and use them to accessorize and complement their overall look. **

It is difficult to determine if something is a fashion trend without more specific information about what is being referred to. Fashion trends can vary widely and can be influenced by a variety of factors such as popular culture, social media, and celebrity endorsements. Without more context, it is challenging to definitively say whether something is a fashion trend or not. **

Teenagers should not feel pressured to follow every fashion trend. It's important for them to express their individuality and personal style, rather than conforming to every passing trend. Additionally, constantly trying to keep up with every trend can be expensive and unsustainable. It's important for teenagers to understand that it's okay to pick and choose which trends they want to embrace, and to prioritize their own comfort and confidence over following every fashion fad. **

One weird fashion trend is "double jeans," which involves wearing two pairs of jeans at the same time. Another strange trend is "clear knee mom jeans," which are jeans with clear plastic panels at the knees. Additionally, "naked pants" are a bizarre trend where the pants are designed to look like the wearer is not wearing any pants at all. These trends push the boundaries of traditional fashion and often spark debate and discussion within the fashion community. **

Trend fashion is determined by a combination of factors including designers, fashion houses, influencers, celebrities, and consumer demand. Designers and fashion houses often set the tone for upcoming trends through their runway shows and collections. Influencers and celebrities play a significant role in popularizing certain styles and brands, while consumer demand ultimately drives what becomes mainstream in the fashion industry. Overall, it is a collaborative effort between various stakeholders in the fashion world that determines what is considered trend fashion. **