Monsoon winds, because climates that changes between winter and summer depends on how much the wind is driven.
Hope this helps :)
The geocentric model stated that Earth was the center of the universe, and all other bodies revolved around it
The controversy that surrounded the Great Zimbabwe Ruins until the early 1900s was to establish that African society did not build Great Zimbabwe and it is done by some other migrant society.
There were lots of political pressure put to deny the African people's role in the Great Zimbabwe ruins.
Explanation
Great Zimbabwe was an ancient city that was spread around 1,779 acres containing huge stone walls of height 11 m.
They were built around 11th to 15th century.
Building such a huge city with stones by African people were unbelievable to archaeologists and other historians.
Some believed that an alien civilization had built it while some referred it to as a biblical site where Solomon had kept 'Ophir' gold.
Answer: Option 'b' is correct.
Explanation:
Workers originally formed unions with the help of which they can protect themselves from intolerable work conditions and unfair treatment such as low wage, late working hours, exploitation, unhygienic working condition, unsafe atmosphere etc.
And many workers had problems with their leaders or managers due to membership in unions.
Hence, Option 'b' is correct.
