Answer:
As agriculture increased, more farming machines were used.
The soil that occurs in regions with extreme wet and dry seasons is known as "black soil."
Black soil:
- Chernozem is another name for black soil.
- It is largely composed of humus, phosphoric acid, phosphorus, and ammonia.
- Exceptionally small or clay-like particles constitute black soils.
- Deep gaps form during warmer weather, resulting in appropriate aeration.
Black soil characteristics include:
- It is extremely fertile and has a clay-like texture.
- At 25°C, the pH of black soil ranges from 7.2 to 8.5.
- The soil has high levels of potash, calcium, and magnesium but low levels of nitrate and phosphate.
- It is often soft when damp but hardens as it dries.
Know more about Soil at: brainly.com/question/19696600
North Africa is predominantly Arab and relatively more developed. Many residents identify more with the Middle East than they do with the larger part of the continent. ... But when it comes to an African identity, some sub-Saharan Africans believe they have more claim to the continent than their northern counterparts.
The origin and wave of political independence that swept across Africa first began in the early 1950's. <span>The </span>African Independence Movements<span> took place in the 20th century, when a wave of struggles for independence in European-ruled African territories were witnessed. European powers like the British, French, and Portuguese slowly decolonized their territories during the mid 20th century.</span>
