<span>An increase in scientific and medical discoveries improved life expectancies.
</span>The best possible explanation for the changes in Europe's population since 1750 is that an increase in scientific and medical discoveries improved life expectancies.In fact, it was around this type that basic hygiene norms were implemented, as well as some mortal diseases were cured or to improve lifbetter treated. Moreover, the discovery of vaccinations helped greatly to improve life expectancies.
<span>Railroads created time zones, the growth of cities and the first truly national market.</span>
Answer:
The mound builders built mounds at Cahokia.
Explanation:
Research made by historians shows that the mound builders are the ancient people who built mound at Cahokia city. This was the large man made structure built by mound builders for the beautification of this city. At the beginning i. e. in 7th century, there are about 1000 people living in this city but the population exceeds to 10000 people in 11th century.
Answer:
The senate has 100 senators.
The house has 435 representatives.
