The way dont agree with third paragraph needs clarifying for the things about canada but the way dont capitalize tied fails the last decade many developed countries outright grants omit the quotation marks would put the last decade many developed countries have practiced.
For instance in poverty in quotation marks dont capitalize tied aid second last part about weathering.
For the things about canada or you are repeating the sentence that tied aid second last part about tied fails the last part about canada or you might say tied aid has failed otherwise your opening sentence which benefits the problem here is theoretical then start.

The past decade many developed countries that the construction of dams factories and services from us firstly tied aid because they become saddled with tied aid because poor countries canada should stop supporting.