What are the reasons behind the rise of international terrorism?

The reasons for the rise of international terrorism are highlighted below:

a. Us hegemony, its intention of spreading its hegemony and its policy of interference across the world has been opposed by many countries Iran, Cuba, and Palestine.

b. The United Nations have only remained a debate in Forum under the influence of the major world powers and the opinion of the developing countries has been largely ignored.

c. The narrow-mindedness and religious fundamentalism have created negative feelings among different communities.

d. The uneven level of development of different countries has increased inequalities in terms of health, literacy, employment, etc.