What were the answers to the questions about Nigerian leadership, the African Union, 19th-century European industrialization's impact on WWI, and Russia's alliance shifts?

here are the answers to your questions:

39. The Nigeria leader who led loyal state forces against the Biafran secessionists in 1966 was... B. General Gowon.

    • General Yakubu Gowon became the Head of State of Nigeria in July 1966 and led the federal forces during the Nigerian Civil War against Biafra.

40. In which country and in what year did the first summit of the African Union take place? B. South Africa, 2002.

    • The African Union (AU) was officially launched at its first summit in Durban, South Africa, in July 2002.

41. The industrialisation of Europe in the 19th Century contributed to the outbreak of the First World War in all of the following ways EXCEPT... D. Colonial conferences held to discuss colonisation.

    • While colonial conferences were a consequence of industrialization-driven imperialism, they were primarily held to regulate and manage the scramble for colonies, rather than directly contributing to the outbreak of World War I in the same way that colonial clashes, rivalry for raw materials, and the arms race did.

42. Which country was a member of the Dreikaiserbund but later joined the Triple Entente of 1907? C. Russia.

    • Russia was a member of the Dreikaiserbund (Three Emperors' League) with Germany and Austria-Hungary in the late 19th century. Later, Russia formed the Triple Entente with France and Great Britain in 1907.