The city of Nanjing was extremely vulnerable to Japanese attack because the Chinese armed forces had been removed from the city.
Answer:
1. This discovery included Pluto in a newly created family of dwarf planets. It also forced the International Astronomical Union to redefine the term planet.
2. The demotion of Pluto to dwarf planet was caused by the discovery of Eris, a minor body that is larger than Pluto. This discovery triggered important events in the history of science. It also proved that there are still many objects to be discovered in the solar system. Therefore, this was a positive development.
3. This discovery was controversial to a small degree because it challenged a widely accepted belief that Pluto was a planet. However, Pluto was discovered less than a century ago, and people showed little resistance to accepting the change.
4.This discovery can be linked to the developments made in astronomy during the Scientific Revolution. It’s somewhat similar to what happened when Copernicus presented his heliocentric theory. He disputed Ptolemy’s accepted theory that Earth was the center of the solar system. Copernicus argued that the Sun was the center and that Earth and the other planets revolved around it. Both discoveries triggered more research in the field of astronomy.
Explanation:
The example asnwers
1825: Turnpikes, canals, and rail lines drastically changed America's landscape, beginning in the 1800s. Following the War of 1812, the American economy was altered from an economy partly dependent on imports from Europe to an empire of internal commerce.
Improvements in maritime technology as well as innovative understanding of monsoon winds roused exchanges alongside maritime directions from africa and asia. The example of two maritime technologies are lateen sail and dhow ships. In addition to world history, the numerous kinds of exchanges that took place between 600 BCE and 600 CE are trade goods, individuals, technology, religious and cultural principles, food crops, house-trained animals and disease pathogens.
The majority of the indigenious peoples who came in contact with the Spaniards died from foreign disease(s). Some of those diseases were smallpox, influenza, measles, and chickenpox.
