References: https://help.tableau.com/current/pro/desktop/en-us/dates.htm https://help.tableau.com/current/pro
/desktop/en-us/dates_continuous.htm https://help.tableau.com/current/pro/desktop/en-us/formatting.htm To ensure the dates are shown in a continuous axis, you should convert the date to a continuous field. This will display the months in a sequence without any breaks, which is needed for showing a trend over time like the cumulative sum of sales.

Explanation:

To complete the formula, you should drag the option MAX from the list of options and drop it into the first blank space, and then drag the option [Sales] and drop it into the second blank space. The formula will look like this: Option (MAX) Option ([Sales]). This formula will calculate the maximum value of the sales field for each country. You can use this formula to create a calculated field that will show the highest sales amount for each country in your data source. References:
* Create a Simple Calculated Field - Tableau
* MAX Function - Tableau
* Tableau Certified Data Analyst Study Guide

In the context of filtering data in Tableau, both string and integer parameters can be used to dynamically filter data. A string parameter can be used to filter text-based values, while an integer parameter is suitable for numerical values. In the provided dataset and result URLs, it appears that a unique identifier or key (which could be a string or integer) is being used to filter specific data entries. References: The information is based on the following sources:
* An Introduction to Parameters in Tableau
* Create Parameters - Tableau