If it is true that...

The organization of proletarians into a class is continually upset by competition between the workers themselves

and

Collisions between classes further the development of the proletariat

Then it must be true that...

With the development of industry, the proletariat not only increases in number but also becomes concentrated in greater masses and feels its strength more

If it is true that...

With the development of industry, the proletariat not only increases in number but also becomes concentrated in greater masses and feels its strength more

and

Machinery obliterates all distinctions of labour and reduces wages to the same low level

and

The growing competition among the bourgeois and the resulting commercial crises make the wages of the workers fluctuating

and

The increasing improvement of machinery makes the livelihood of workers precarious

Then it must be true that...

Collisions between individual workmen and individual bourgeois take on the character of collisions between two classes

If it is true that...

With its birth, the proletariat begins its struggle with the bourgeoisie

and

With the development of industry, the proletariat not only increases in number but also becomes concentrated in greater masses and feels its strength more

and

Collisions between individual workmen and individual bourgeois take on the character of collisions between two classes

and

Workers form combinations against the bourgeois to keep up the rate of wages

Then it must be true that...

Improved means of communication created by modern industry help in centralizing numerous local struggles into one national struggle between classes