How did architecture change during the middle ages?
o buildings became taller and more detailed.
buildings had smaller windows and less ornamentation.
buildings had large, rounded arches with stained glass.
buildings became shorter with larger windows.

they are best described as reliable search engines.

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.

he risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: