<span>a. Lister’s work was only made possible by Pasteur’s discoveries.
Pasteur first theorized the cause of infection to be germs. Lister built on the "germ theory" and created the ideas of sterile surgery.
Both Pasteur and Lister are credited for revolutionizing surgery to become a sterile process. Without Pasteur's "germ theory", Lister would not have had a theory to work from. The two scientists also corresponded with one another improving the process for sterilization. </span>
1840s
Factory-made agricultural machinery increases farmers' need for cash and encourages commercial farming
1841
Practical grain drill patented
1842
First grain elevator, Buffalo, NY
1843
Sir John Lawes founded the commercial fertilizer industry by developing a process for making superphosphate
1844
Practical mowing machine patented
1847
Irrigation begun in Utah
1849
Mixed chemical fertilizers sold commercially
<u>Answer:</u>
The extensive and deep penetrating system of rivers inside the continent helped and facilitated the explorations in it.
<u>Explanation:</u>
The deep rooted river systems facilitated the exploration of many coastal regions which were deep inside North America as the European explorers usually travelled in ships. The Mississippi being one of the most important and extensive example of such rivers.
Columbus who is credited the most to the exploration of North America too was able to access it through the coasts and the central American river coasts starting with the Bahamas, Cuba and Hispaniola and spreading to Trinidad and Tobago.
A Person living in Hawaii who is convicted of assault and battery in a trial court may appeal the decision to a "<span>state-level appellate court" since this is where appeals go when someone is unsatisfied with a verdict, or thinks they may have had a mistrial. </span>
Emergency tariff act of 1921 : increased American purchasing power
Revenue acts of 1924 and 1926 : reduced income, gifts and inheritance taxes
Washington disarmament conference : decreased the size of navies around the world.
<u>Explanation:</u>
The emergency tariff act increased the rate of goods imported from foreign nation from tariff and were the inherited taxes. Revenue acts of 1924 was to cut federal tax rates which increased purchasing power.
Washington disarmament conference was to prevent the world war I by reducing the size of navies around the world. For this reason there was discussion about the naval disarmament so that the tensions which were growing in east Asia could be reduced and war could be avoided.