Write about an invention that greatly changed American life Your paragraph must have at least 5 sentences.

Magnetic compasses, their impact on early navigation and exploration was inestimable.  It was invented in China and by the 14th century, compasses had become the primary navigational tool for mariners. The compass provided explorers with a reliable method for traveling the world’s oceans. The compass allowed interaction some peaceful and others not between isolated cultures. Without the compass, people on the seas would not have any sense of direction. The compass is truly a very important tool.

answer: the 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:

it allows shippers to carry commercial goods, which allows them to save time and money.