Check plgiarism $1.$ Bargaining power of consumers

$2.$ Potential entry of new competitors

$3.$ Potential development of substitute products

$4.$ Bargaining power of suppliers

And the most powerful one is

$5.$ Rivalry among competing firms:

It is the competition rate between Firms in the same industry.

It is considered to be strongest because:

$-$ It affects new market entry decision.

$-$ It affects the customers loyalty towards well Known products.

$-$ In high competition rate:

The pricing strategy changes

The heavy advertising expenses

which will reflect on profitability of the products in the same industry