I am reading many academic papers at the moment and am becoming more aware of the use of has, have, had in front of a verb, where it seems redundant. For example the following sentence:
The economic and financial crisis has pushed Western OECD countries to cutback management and to savings, but has also pushed them towards an awareness that trust in the capacity of governments and its public sector to realise effective policies is a crucial element in a performing society and economy.
My intuition says
The [...] crisis pushed Western countries...
is the same, and avoiding redundant words is always favourable. Am I correct here, and if not, is there a rule the use of this?
(I tried Google, but I don't know what the correct name of this past tense is)
edit
Am I correct if I say both versions are right, but 'has pushed' is more appropriate because it does not refer to a specific point in time?