Drag the events into the correct order.

farmers begin to use crop rotation.

trade grows.

europe's population increases dramatically.

the supply of grain and food increases.

farmers begin using iron plows.

By considering A for farmers who began to use crop rotation, B for trade grows C for dramatic increses of the european demographic figures, D for the increases of the supplies of grain and food and E for the time when farmers begun using iron plows I would say timewise the right order would be: E,C,A,B,D