Think about all the innovations you've learned about in this lesson. It is time to start thinking like a cultural historian. Imagine that you are preparing a time capsule of items that represent scientific achievements from the 20th century. The people who dig up your time capsule will be unfamiliar with the importance of these innovations because they are living in a world made possible by innovations developed well after you. Your job is to prepare an explanation of 20th century science and innovation for the time capsule.

Answer and Explanation:

The 20th century promoted several scientific innovations that were very important for human progress, in addition to representing the basis for discoveries that would be made in the coming years, making science even more innovative.

First, we can say that the 20th century was essential for the treatment of infections, since it was at that time that antibiotics were discovered, being one of the most important medicines in the world. Airplanes and the Internet are also scientific advances of that time and have become two essential elements in modern life.

Nevertheless, science has stimulated advances in communication, entertainment and even food. This all shows how important the 20th century was to establish the benefits and facilities that we currently have.

While the public's fear of foreign involvements in continental North America may have concurred with Polk's agenda, the war he fought against Mexico that began in May 1846 and concluded in February 1848 sparked widespread criticism throughout political, journalistic, and literary circles in addition to strong support. Following the annexation of Texas, the Mexican government had severed diplomatic relations with the U.S. Polk subsequently sent an envoy, former Louisiana congressman John Slidell, to Mexico to try to resolve disputes over the Texas boundary and over damages that the Mexican government owed to U.S. citizens but could not pay. Polk instructed Slidell to make an offer that the U.S. would pay off Mexico's debt in order to acquire "Upper California and New Mexico" and would spend as much as $40 million to purchase the land.

Explanation: