Margaret sanger was the 1st person to do this
In mathematics and in particular in algebra, a linear or nonlinear system of equations is consistent if there is at least one set of values for the unknowns that satisfies every equation in the system—that is, that when substituted into each of the equations makes each equation hold true as an identity.
A file can only be in one folder at a time—but it could have an unlimited number of tags. Say you've made a project schedule for a repeat client, and you want to save it in the specific project folder and to the client’s main folder. With folders, you'd have to pick one folder (or duplicate the file, which could cause issues). Tags, on the other hand, are perfect for adding category data like this, since you can add as many tags as you want to a file. You could tag the schedule with both the project’s name and the client’s name, then save the file just in the project's folder. Simplified Compliance. A professional labeling solution makes label changes easier and helps ensure compliance. ...
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Answer:
Mostly because the death rate fell tremendously.
Explanation:
The main causes of population growth had to do with diet and hygiene and health care.
The Agricultural Revolution (which started in the 17th century) led to better food production and thus better diet and nutrition for people, so healthier lives.
The Industrial Revolution (beginning in the mid 18th century) pushed cities to create better sanitation methods to avoid cholera and other disease epidemics.
And the ongoing advances in medicine ever since the Scientific Revolution were doing their part also to increase lifespans.
Disease, Armor, Guns, and Horses