Pros
Exploring the unknown
Developing technology
Testing and experimenting with unknown aspect in physics -
Creating new theories
Cons
Other issues are more important
Can be a waste of money if theories can be validated
There are dangers and risk that are unknown in space
Hope it helps
In Aztec social hierarchy, people who are called "Serfs" are the ones expected to support the upper class. They belong to the lowest social class in the Aztec culture and required to do labors for the nobles. As for the Incas, "Commoners" (farmers, artisans, servants, etc.) are required to support the higher class for they do not practice slavery. Majority of Inca's population belongs to the commoner class.
The correct answer is that Russia and Britain sent troops to protect their interests there. This was aimed at ensuring that the countries had substantial influence in order to restrict foreign access. Oil was an important resource and still remains important as an energy source
Answer - Boston Massacre: The other soldiers began firing a moment later, and when the smoke cleared, five colonists were dead or dying: Crispus Attucks, Patrick Carr, Samuel Gray, Samuel Maverick and James Caldwell. Three more were injured. i hope this was helpful <3