Answer:
def power(base, expo):
    if expo == 0:
        return 1
    else:
        return base * power(base, expo-1)
Explanation:
*The code is in Python.
Create a method called power that takes base and expo as parameters
Check if the expo is equal to 0. If it is return 1 (This is our base case for the method, where it stops. This way our method will call itself "expo" times). If expo is not 0, return base * power(base, expo-1). (Call the method itself, decrease the expo by 1 in each call and multiply the base)
 
        
             
        
        
        
Operating systems.
Device drivers.
Middleware.
Utility software.
        
                    
             
        
        
        
Here are some important points:
- we use it to do essays for school
- we can use it to do flyers for recreational events
- we can use it to do pamphlets to inform people
- it is versatile, so you can create many different types of documents
- you can create charts
This can be your opening statement
Today, there is a lot asked of a child in school. From charts to essay to projects, the average kid has at least 10 different programs they use just for one project. But there is one program that came along and changed everything, and that program is called Microsoft word. Microsoft word is valuable because it is versatile (what I wrote earlier about it being able to do many different tasks), it simplifies your experience (what i said about it being able to combine different programs into one), and it is free (you can write about how some programs charge to use their high-grade programs but microsoft is free and avaialabe on every windows 
computer.)
GOOD LUCK !
        
             
        
        
        
Answer:
Artificial Intelligence.
Automated personal digital assistant.
THz frequencies for Communications (5G & 6G)
Blockchain.
Virtual reality and augmented reality.
Internet of Things (IoT)
Visible light communication.
LTE.
Explanation: