On the old days Egypt didn’t had machines to created all the constructions they did. They used the slaves to construct all that. The machines on that time were like a big oblong of wood with two wheels and whit that they construct the pyramids and others things really big but each of the construction had a way to be like that, things to had for example the pyramids were big and in that position because with that they knew the time. They trade the things that they had for others that they need because they didn’t have money to buy to others countries things that they need to live. On the contrary of nowadays the constructions are different because on this times we used different machines to construct like the mixer and must of the constructions doesn’t have a way to be they just construct something that have to be pretty. Also we used the money to buy things that we doesn’t have and we sell the things that we have.