75% of state legislatures must approve a proposed Constitutional amendment for it to become law
Explanation:
There are many steps which are involved in the amendment process first the two thirds of both the houses of the constitution pass a proposed amendment and then this is sent for ratification to the states and it is discussed upon by various members of the constitution. Debates are done upon whether to pass it to the constitution or not and then it is decided upon.
Then three fourths of the state that is thirty eight out of fifty states ratifies the proposed amendment and then it is passed on with the convection of the president and the governor. The amendment process is very difficult and it is often a long process and a time consuming process
This is a citation from Frenklin Delano Roosevelt's First Inaugural Address in 1933. The Situation in the US in those days were challenging, mainly because of the Great Depression and its consequences, and because previous presidents did not manage to tackle that problem as well as they should. Unemployment was more than 20% and there was a widespread poverty.
So his words were a sign that he intends to be direct and open with the people in the US. He also wanted to calm the frustrated ones, and to act swiftly in order to show his decisiveness. So the best strategy was to calm the millions of american people who were quite close to the state of panic and distrupt.
The first part of the sentence is true: isobars are the lines that connect points of equal air pressure.
The second part is false (so the whole statement is false too): letters just mark points with high and low pressure.
Fronts are also shown by lines: lines with triangles on them
