Spanish to English Bus/Financial Finance (general) Financial Crisis

In a text describing how capitalism has generated large earnings due to technological advances/inventions and increased production, the following paragraph states:

Esos sucesos facilitaron a los capitales canales de inversión rentables en actividades productivas, los que se manifetó en atas índices de crecimiento económico.

I have:
These events facilitated profitable channels of investment capital (or, channels of profitable investment of capital) in productive activities, which was demonstrated in high rates of economic growth.

Any ideas?