I read what you wrote regarding wearing of the trousers in front of relatives, and that it is not Shariah compliant, however you did not provide an evidence for this...but you said that it is from Tabarruj; and as what we have learnt the meaning of Tabarruj is anything that attracts the attention. However, how a society views Tabarruj differs from one country to another;

borrowing from foreign countries and international financial institutions, where it is mentioned in the book The Funds in the Khilafah "Caliphate" State that it is prohibited by the Shariah because borrowing from them cannot happen except via usurious interest and conditions... The question is: When can the borrowing be permitted, and what are the conditions which makes it prohibited? Is there a difference if these countries are in treaty or…

the competence under Item VII of the conditions of the Khaleefah, then explained the competence and elaborated until it reached the following statement: "Also it is not a contracting condition for the Khilafah "Caliphate" that the Khaleefah must be brave, or the people of good vision to manage the affair of the community and to conduct its interest". Question: is this not considered competence?

the following sentence was mentioned in the book Usul al-Fiqh: "It should not be said here that Allah has obliged the Zakat, provision [Nafaqah], and liabilities [Damanaat] upon the child and the insane and so therefore they are legally responsible [Mukallaf] because they have been made responsible for some of the legal rulings.