Which of the following innovations was discovered during the gupta empire in india?
algebra
smallpox vaccinations
the use of zero as a placeholder
all of the choices are correct

Ineeed the answer asap which of the following describes the link between u.s. foreign policy and the rise of islamic extremist leaders in afghanistan during the late 20th century? apex

What impact did company towns have on working conditions? company towns were ideal places to live because of the cheap prices of company stores. entertainment value in company towns made them attractions for those in rural areas. education provided by company towns workers to progress in the company. conditions in some towns indebted workers to trap them in the labor system.

What project establish leonardo da vincis reputation as a creative and talented engineer