A strong desire to do or to achieve something, typically requiring determination and hard work.
Answer:
<em>Galileo di Vincenzo Bonaiuti de' Galilei, commonly referred to as Galileo, was an astronomer, physicist and engineer, sometimes described as a polymath, from Pisa, in modern-day Italy. </em>
Answer:
The Tigris and Euphrates rivers made it possible to grow wheat on the arid Mesopotamian plains, but the dry climate eventually defeated human engineering. Irrigation brought water to fields faster than it could drain out. As salt-rich groundwater rose and surface water evaporated, mineral salts built up in the soils. Farmers switched to more salt-tolerant grains like barley, but the harder they farmed, the less they harvested. After about 2,000 years, the once-fertile land of southern Mesopotamia was barren.
Explanation:
1. They are not sure if they are making the right decision
2.two parties may not be enough
3.they are not educated enough
4.they are not a citizens
