The correct answer is B. Antoine-Laurent de Lavoisier was a French chemist, biologist and economist who discovered <em>the law of conservation of matter</em> in 1785.
This law states that during a chemical reaction, <u>the total mass in the system remains constant</u>, that is, the mass consumed of the reactants is equal to the mass of the products obtained.
Answer:
The highest rate of U.S. unemployment was 24.9% in 1933, during the Great Depression. Unemployment remained above 14% from 1931 to 1940.
Graph of U.S. Unemployment Rate, 1930-1945 The unemployment rate rose sharply during the Great Depression and reached its peak at the moment Franklin D. Roosevelt took office. As New Deal programs were enacted, the unemployment rate gradually lowered.
The lowest unemployment rate recorded in this period was 1.4% in 1890 and the highest was 10.2% in 1892. In 1911 a compulsory national scheme of insurance against unemployment was introduced. This meant there was a significant change to the way data on the unemployed was collected.
Answer: The most straightforward theory for Western Rome’s collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire’s borders. The Romans weathered a Germanic uprising in the late fourth century, but in 410 the Visigoth King Alaric successfully sacked the city of Rome.
Explanation:
Answer: Some scholars, such as Jared Diamond, believe that while the Spanish conquest was undoubtedly the proximate cause of the collapse of the Inca Empire, it may very well have been past its peak and already in the process of decline. In 1528, Emperor Huayna Capac ruled the Inca Empire.
