Which of the following best explains how and why the practice of native american slavery changed over time?

over time, native americans replaced african slaves because they were better at farming and mining for gold.

over time, native american slaves replaced african slaves because of the high taxes on the african slave trade.

over time, native american slaves were replaced by african slaves because the native americans were dying of diseases.

over time, native american slaves were replaced by african slaves because of treaties signed between the europeans and the native americans.

Your answer is c! I just got it right on Da test!

answer: a

explanation:  

stocks and bonds are the two main classes of assets investors use in their portfolios. stocks offer an ownership stake in a company, while bonds are akin to loans made to a company (a corporate bond) or other organization (like the u.s. treasury). in general, stocks are considered riskier and more volatile than bonds.

savings accounts are just money in a bank- they are insured by the fdic for up to 250,000.   very little risk

the average mutual fund holds hundreds of different securities, which means mutual fund shareholders gain important diversification at a low price. which means if one stock or bond drops it will have very little affect on the mutual fund - again very little risk