Invention that sped up the process of spinning yarn and thread

"i really need this answered quickly ! " how can investing in the stock market consumers reach their savings and spending goals?

What are objects called that have value in and of themselves as well as value as a means of exchange? custom commodity money currency simple money

Which sentences describes a cycle of dependency? a. aid harms the local economy creating the need for more aid.b. aid improves infrastructure and creates more wealth and more good infrastructure.c. aid programs become more reliable over time so people can depend on them.d. no answer is correct