Forecasting and modeling sales [D]

Hello everybody, I need your advice please.

We research the sales of a product ( eg coffee with all its subcategories pods, instant,..etc) in two “ quite similar “ markets ( eg Australi and New Zealand).

This year, we want to model the NZ coffee sales based on AUS trends and findings ( to save time instead of researching the 2 countries separately).

From an econometrics viewpoint, what is the best solution ?

1. Do simple univariate time series forecasting using …

forecasting machinelearning modeling sales