A president can know their 2 year term is up when other politicians are considering to prepare their own campaigns for the next election cycle. It always occurs in the midst of their term, usually two years in.
Faulse that is the answer
Of course it has, many third world countries require modern technology to grow and flourish. Before the industrial revolution in the United States, many people worked extremely hard to make clothes and create armory but after the revolution, the impact was huge sewing machines came into work, interchangeable parts and etc. we now use technology that we have to help countries that are still developing.
Economic issues in general are the issue.