By the end of the 13th century, Crusading had become more expensive. The time had passed when a Crusade army was made up of knights who served under a lord and paid their own way. Economic pressures caused many nobles to seek royal service. Royal armies, therefore, became more professional, and many knights as well as foot soldiers served for pay. Moreover, the rise of royal authority meant that great Crusades could no longer be cobbled together by feudal lords but were increasingly reliant on kings, who were by their nature easily distracted by events at home.
He had many reasons but he decided to drop the atomic bomb because he hoped that Japan would surrender. He also wanted to avoid having an invasion by the Japanese because it would be costly, difficult and terrible since the Japanese attacks were so brutal.
The answer I'd go with is D
The development of the human population as a civilization is directly associated with the development of food production techniques.
In the past, the civilization of hunters and gatherers lived from these practices. In the development of mankind, subsistence agriculture has emerged. Food production held people to cultivated land and pastures, giving rise to small permanent communities.
Since the division of labor began, several sectors have been improving, mainly agriculture. In this context, the first signs of trade arise, through barter - exchange of one commodity for another.
Until then, the world population was controlled by limitations in production. In the context of the development of commerce the first coins and the first studies on the economy appeared in Adam Smith, Tomas Mautus and David Ricardo.
Mautus had a pessimistic theory in which the population would grow in geometric progression while food production would grow in arithmetic production, which would cause many to starve. Already Ricardo and Smith elaborated theories on the surplus of the earth and on the commerce.
Unlike Mautus' predictions, the development of agricultural technologies, associated with the development of trade, was a watershed. It promoted the increase of the population and consequently the human and technological development, allowing the emergence of Industrial Revolutions until the present day.
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The answer is : " Changing weather and climate patterns."
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an arrangement of broadening a nation's capacity and impact through discretion or military power.
rule by an emperor.
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